Mobile Home Door Replacement: What to Know Before Buying or Installing

If you have ever tried to order a door for a manufactured home and ended up with something that does not fit, you already understand the core problem. Mobile home door replacement is not the same as replacing a door in a site-built house. The sizes are different, the wall depth is different, and the threshold design is different. Buy the wrong door and you will spend more fixing the mistake than you would have spent on the right door from the start.

This guide covers everything you need to know before buying or installing a replacement door in a manufactured home, exterior front and back doors, interior bedroom and bathroom doors, screen and storm doors, and sliding closet doors. You will find sizing specs, sourcing options, installation steps, cost ranges, and a comparison table so you can plan the project and budget it accurately.

Key Takeaways

• Manufactured home exterior doors are typically 32x76 or 34x76 inches, not the standard 80-inch height used in site-built construction.
• Wall thickness in manufactured homes is shallower (3.5 inches) compared to site-built homes (4.5 to 6 inches), requiring a different jamb depth.
• Standard home center pre-hung doors will not fit a manufactured home without significant and costly modification.
• Manufactured home doors must be sourced from specialty dealers, MH parts suppliers, or online retailers who stock MH-compatible sizes.
• Exterior door replacement costs $250 to $600 installed; interior doors run $150 to $350 installed.
• Replacing all 5 to 6 interior doors in a singlewide manufactured home typically costs $700 to $2,000 depending on materials and whether you DIY or hire out.
• Signs a door needs replacement include warping, rot, failed weatherstripping, and security compromise.

How Manufactured Home Doors Differ from Site-Built Doors

This is the single most important thing to understand before you buy anything. If you take one piece of information from this article, make it this section.

Door height: Standard site-built residential exterior and interior doors are 80 inches tall. Manufactured home doors are typically 76 inches tall, that is 4 inches shorter. Some older homes use 72-inch doors, and some newer HUD-code homes use 80-inch doors, so you must measure the rough opening before ordering anything.

Door width: Manufactured home exterior doors are commonly 32 inches wide (for the front door) or 34 inches wide. Interior doors in manufactured homes are typically 24, 26, 28, or 30 inches wide, similar to site-built but you still have to measure because the rough opening is what matters.

Wall thickness and jamb depth: This is where most people go wrong when they try to adapt a standard door. Site-built homes have exterior walls that are typically 4.5 to 6 inches thick, which means pre-hung doors from home centers come with jambs built for that depth. Manufactured homes use 3.5-inch wall construction. A standard pre-hung door from a home center has a jamb that is too wide for a manufactured home wall, and you either have to rip the jamb down (which adds labor cost and voids the product warranty) or source a door with the correct 3.5-inch jamb depth from the start.

Threshold design: The threshold on a manufactured home exterior door is designed to account for the floor height of a manufactured home, which typically sits closer to the ground level of the frame than a site-built home on a foundation. The threshold profile is different. Using a site-built threshold on a manufactured home creates a gap at the bottom of the door or a trip hazard, and it can allow water to migrate under the threshold and into the subfloor.

Inswing vs. outswing: Many manufactured homes use outswing exterior doors rather than the inswing standard common in site-built construction. This matters for security hardware selection and for weatherstripping design. Verify swing direction before ordering a replacement. HUD's 24 CFR Part 3280 covers manufactured home construction standards including doors and egress.

Signs Your Manufactured Home Door Needs Replacement

Not every door problem requires full replacement, but these are the situations where replacement is the right call rather than repair:

Warping: A warped door will not close or latch properly. This is common in older manufactured homes where the door has absorbed moisture over years of use. A warped door that cannot be latched is a security risk. If the warp is minor you may be able to adjust the strike plate, but significant warp means the door slab needs to go.

Frame rot or impact damage: If the door frame itself has rotted, which is common around the threshold and lower corners of exterior door frames in manufactured homes that have had water intrusion, replacement of the entire pre-hung unit is usually necessary. Spot-repairing a rotted frame is a short-term fix that will fail again.

Failed weatherstripping causing drafts: Weatherstripping can be replaced on its own without replacing the door, but if the frame has deformed or the door slab has warped enough that new weatherstripping still does not seal, the whole unit needs to go. Energy loss through a bad exterior door in a manufactured home is significant, a singlewide with two failing exterior doors can lose as much heating and cooling as a broken window, adding $30 to $80 per month to energy bills in climates with temperature extremes.

Security concerns: Older manufactured home doors often used hollow-core slabs and basic hardware. If you are selling or renting a unit, upgrading to a solid-core or steel door with a deadbolt provides a meaningful security upgrade that also improves buyer and tenant confidence.

Door no longer available for hardware match: If the existing door is so dated that compatible replacement hardware (hinges, deadbolt, lever set) is not available, replacement of the whole unit is often more cost-effective than custom fabrication of hardware.

Exterior Door Replacement: Types, Costs, and Sources

Front Door (Exterior)

The front door is the highest-traffic exterior door and the one that matters most for curb appeal and security. For a manufactured home, a standard replacement pre-hung front door unit costs $150 to $400 for the door itself, depending on material (steel, fiberglass, or wood) and whether it includes a glass light or decorative panel.

Steel exterior doors ($150 to $250 for the door unit) are the most common and the most practical for manufactured homes used as rentals or flips. They resist warping, are pre-primed, and provide good security. Most manufactured home specialty suppliers stock steel exterior doors in 32x76 and 34x76 sizes.

Fiberglass exterior doors ($200 to $400 for the door unit) offer better energy efficiency and better moisture resistance than steel. They can be painted or stained to look like wood. Worth the premium for owner-occupied homes or higher-end rental units.

Wood exterior doors ($250 to $400+) look great but require more maintenance and are more susceptible to moisture damage in manufactured home environments, particularly if the home has had previous water intrusion issues. Generally not recommended for investment properties.

Labor to install an exterior front door: $75 to $150 for a straightforward replacement where the rough opening is in good condition and the frame does not need repair. If frame repair is needed, add $100 to $400 depending on the extent of damage.

Total installed cost for exterior front door: $250 to $600.

Side or Back Door (Exterior)

Secondary exterior doors in manufactured homes are often less ornate than the front door, typically a solid steel or hollow fiberglass panel without glass. Material cost runs $100 to $300. Labor is the same range as the front door ($75 to $150) since the installation steps are identical.

Total installed cost for side or back door: $175 to $450.

Screen or Storm Door

Screen and storm doors for manufactured homes are available in 32x76 and 34x76 sizes from MH specialty suppliers. They add a layer of insulation in winter, allow ventilation in spring and fall, and protect the exterior door from direct weathering.

Material cost: $80 to $250 depending on frame material (aluminum vs. steel) and whether it is a full-view screen, retractable screen, or insulated storm door.

Labor to install: $50 to $100. Screen and storm doors are straightforward to install as a DIY project if you have basic tools and are comfortable working with a drill.

Total installed cost: $130 to $350.

Interior Door Replacement: Bedroom, Bathroom, and Closet

Interior door replacement in manufactured homes is less complicated than exterior replacement in terms of structural stakes (no weatherproofing, no security hardware required), but the sizing challenge remains. Standard home center interior doors are 80 inches tall. Manufactured home interior doors are 76 inches tall. The jamb depth issue applies here as well.

Bedroom and Hallway Doors

Interior bedroom and hallway doors in manufactured homes are typically 24, 26, 28, or 30 inches wide by 76 inches tall. They are usually hollow-core for weight reasons.

Material cost for a pre-hung interior door unit: $50 to $120 depending on width and whether you choose a basic hollow-core slab, a six-panel hollow-core door, or a solid-core door for sound privacy in a bedroom.

Labor: $75 to $150 per door. Interior door installation is one of the easier remodel tasks for a competent handyman or DIYer.

Total installed cost per interior door: $125 to $270.

Bathroom Door

Same sizing and pricing range as a bedroom door. The main distinction is that bathroom doors sometimes require a privacy lock set (a lock that can be opened from the outside with a small tool in an emergency), which adds $20 to $40 to hardware cost.

Sliding Closet Doors

Sliding bypass closet doors for manufactured homes come in sets. Common sizes in manufactured homes are 48-inch (two 24-inch panels) or 60-inch (two 30-inch panels) openings.

Material cost for a sliding door set: $60 to $150 for a basic mirrored or hollow-core bifold or bypass set.

Labor: $50 to $100. Sliding door hardware installation requires careful track alignment but is within reach of a skilled DIYer.

Total installed cost for a sliding closet door set: $110 to $250.

Where to Source Manufactured Home Doors

This is the step where most people either get it right cheaply or get it wrong expensively.

Manufactured home parts dealers and specialty suppliers: These are your best first stop. Companies like mfgsupply.com (Manufactured Home Parts Supply) and similar regional dealers stock doors specifically sized and framed for manufactured home wall construction. You get the right height (76 inches), the right jamb depth (3.5 inches), and the right threshold. Prices are competitive and you avoid the modification costs that come from adapting a standard door.

Online specialty retailers: Several online retailers specialize in manufactured home parts and will ship pre-hung door units directly to you or to a job site. Useful for rural markets where a local MH parts dealer is not nearby. Shipping cost on a pre-hung door unit typically adds $50 to $100 to the price.

Home centers (Lowe's, Home Depot): Home centers carry some doors in 76-inch heights, notably interior doors, but their pre-hung door units typically come with jambs designed for 4.5-inch walls, not 3.5-inch. You can sometimes find door slabs (without the jamb) that work if you source or build your own jamb, but this adds labor. For exterior doors, home centers are generally not a reliable source for MH-compatible pre-hung units without modification. Some home centers in markets with high manufactured home density do stock limited MH-compatible sizes, worth checking locally but do not count on it.

Do NOT do this: Do not buy a standard 80-inch pre-hung unit from a home center and assume it will fit with minor trimming. A 4-inch height difference is not a minor trim, it changes the rough opening requirements and the structural framing around the door. Cutting down a pre-hung unit is possible but requires carpentry skill and will void any product warranty.

Installation Steps for Exterior Door Replacement

Here is the basic sequence for replacing an exterior door in a manufactured home. This assumes the rough opening framing is in good condition. If it is not, address the framing before installing the new door.

Step 1: Measure the rough opening. Measure width and height of the rough opening (the framed opening, not the old door slab). Write down both numbers before ordering anything.

Step 2: Order the correct door. Based on your measurements, order a pre-hung door unit with the correct width, 76-inch height (or whatever your rough opening calls for), 3.5-inch jamb depth, and the correct swing direction (inswing or outswing, left-hand or right-hand).

Step 3: Remove the old door and jamb. Remove the door slab from the hinges. Cut the caulk or sealant around the exterior trim. Pull the old jamb assembly out of the rough opening. Remove any remaining fasteners and clean out the rough opening.

Step 4: Check and repair the rough opening. Inspect the rough opening framing for rot, moisture damage, or structural issues. Address any damage before proceeding. This is the step most DIYers skip and later regret.

Step 5: Set the new pre-hung unit in the rough opening. Lift the unit into the opening. Make sure the unit sits level (use a level on the threshold) and plumb (use a level on the hinge jamb). Use shims to adjust as needed.

Step 6: Fasten the jamb. Nail or screw through the jamb and shims into the rough opening framing. Check that the door swings freely and latches correctly before fully fastening.

Step 7: Install the exterior trim and seal. Install brick mold or exterior casing around the door. Caulk all exterior joints where the trim meets the siding and where the threshold meets the floor. This sealing step is critical in manufactured homes because water intrusion at exterior doors is the most common cause of subfloor damage.

Step 8: Install hardware and weatherstripping. Install the deadbolt, handle set, and any door closer or kickplate. Check that weatherstripping seals fully when the door is closed.

Step 9: Paint or stain. Prime and paint the door and trim to match or complement the home exterior.

Full Home Door Replacement: What to Expect

For investors rehabbing a singlewide manufactured home, a common scope is replacing all exterior and interior doors at once. A typical singlewide has 1 exterior front door, 1 back or side door, and 4 to 5 interior doors (2 bedrooms, 1 bathroom, 1 to 2 closets).

Materials for a full singlewide door package: $500 to $1,000 depending on door types and grades selected.

Labor for a full singlewide door package: $500 to $900 for a handyman or contractor familiar with manufactured homes, assuming the rough openings are in good condition.

Total for full singlewide door replacement: $1,000 to $1,900.

Buying all doors at once from the same supplier often yields a small volume discount, typically $20 to $50 per door on orders of 5 or more units. Ask explicitly when placing the order.

Comparison Table: Mobile Home Door Types

💡 Did You Know? For a manufactured home, a standard replacement pre-hung front door unit costs $150 to $400 for the door itself, depending on material (steel, fiberglass, or wood) and whether it includes a glass light or decorative panel.

Common Mistakes to Avoid

Buying a standard home center door without checking the jamb depth. This is the most expensive mistake you can make in this project. The door slab may seem to fit but the jamb will be 1 to 2.5 inches too wide for the wall. You will either spend $75 to $150 in extra labor having a carpenter rip the jamb down, or you will end up with a door that sits proud of the wall surface and looks bad.

Failing to measure the rough opening before ordering. Every manufactured home is slightly different. Do not assume your door is 32x76 because the previous one looked like a standard size. Measure the rough opening height and width. Write the numbers down. Bring them to the supplier.

Installing a new door without repairing a damaged rough opening. If the framing or subfloor around the door is rotted or damaged, installing a new door over the damage is a short-term fix. The new door will perform poorly and may be damaged itself within a year or two. Fix the rough opening first.

Skipping exterior caulk and sealing. In manufactured homes, the exterior wall system is less forgiving of water intrusion than site-built construction. A gap in the caulk around a door threshold or exterior casing will drive moisture into the wall and subfloor. Take the time to seal every joint on the exterior when the job is done.

Choosing the wrong swing direction. A door that swings the wrong direction is a nuisance at best and a code violation at worst (egress doors in bedrooms must swing in a way that allows emergency exit). Verify inswing vs. outswing and left-hand vs. right-hand swing before ordering.

Ignoring weatherstripping on interior bathroom doors. Bathroom doors in manufactured homes benefit from a basic door sweep and weatherstripping to contain moisture and reduce condensation migration into interior wall cavities.

Common Questions Answered

Can I use a standard Lowe's or Home Depot door in a manufactured home? Not without modification, and the modification often costs as much as simply buying the right door from a manufactured home specialty supplier. Standard home center pre-hung doors are 80 inches tall and have jambs built for 4.5-inch to 6-inch walls. Manufactured homes have 76-inch door openings (in most cases) and 3.5-inch walls. If you are determined to use a home center door, plan for custom jamb work and be prepared to void the door warranty.

How do I know if my manufactured home door is 32x76 or 34x76? Remove the interior trim casing from around the door frame and measure the rough opening, the actual framed opening width and height. That number is what you order around. A 32x76 rough opening takes a 32x76 pre-hung door unit. A 34x76 rough opening takes a 34x76 unit. Some homes have non-standard openings, which is why you always measure before ordering.

Is door replacement in a manufactured home a permit-required project? It depends on your jurisdiction and on the type of door. In most areas, a like-for-like exterior door replacement in a manufactured home does not require a permit. However, if you are changing the rough opening size (widening or narrowing the opening), that is a structural modification that typically requires a permit. Check with your local building department before starting if you are unsure. Some parks also have rules about exterior modifications.

How long does exterior door replacement take? For a professional handyman familiar with manufactured homes, a straightforward exterior door replacement, where the rough opening is in good condition, takes 2 to 4 hours per door including cleanup. If the rough opening needs repair, add 2 to 6 hours depending on the scope of damage.

What is the best door material for a rental manufactured home? Steel is the standard recommendation for rental properties. It is durable, it does not warp, it resists forced entry better than hollow-core wood or fiberglass, and it is typically the lowest-cost option in the MH-compatible sizes. A steel exterior door with a deadbolt is the right call for most investment properties.

Can I replace just the door slab without replacing the entire jamb? Yes, if the existing jamb is in good condition and is the correct depth for a manufactured home wall (3.5 inches). A slab-only replacement is less expensive and less disruptive, you reuse the existing hinges or mortise new ones on the replacement slab. However, if the jamb is damaged, rotted, or the wrong depth, full unit replacement is the right call.

🎯 Key Takeaway: Manufactured home exterior doors are typically 32x76 or 34x76 inches, not the standard 80-inch height used in site-built construction.

Realistic Scenarios

Scenario 1: Single exterior front door replacement, investor flip. A manufactured home investor buys a 1985 singlewide with a warped front door that will not latch. The rough opening is in good condition. The investor orders a 32x76 steel exterior door unit from a manufactured home parts supplier for $185. A local handyman charges $125 for installation. Total cost: $310. The new door photographs well, locks properly, and adds to buyer confidence at resale.

Scenario 2: Full interior door replacement, rental rehab. An investor is rehabbing a 1990 singlewide as a long-term rental. All 4 interior doors (2 bedrooms, 1 bathroom, 1 closet bifold set) are hollow-core and show impact damage. The investor orders all 4 units from the same MH specialty supplier and negotiates a small volume discount, paying $340 for all 4 units. A handyman charges $450 for all 4 installations in one day. Total cost: $790. The interior reads fresh and clean in photos.

Scenario 3: Exterior door with damaged frame. An investor finds that the back door of a 1978 manufactured home has significant rot at the bottom of the frame and into the subfloor around the threshold. The door itself is secondary, the frame repair is the real scope. A contractor charges $300 for subfloor and frame repair, $130 for the replacement door unit, and $125 for installation. Total: $555. More than a simple swap, but the alternative, installing a new door over a rotted frame, would create a recurring problem.

Getting the Project Right from the Start

For a deeper look at the broader scope of manufactured home repair and improvement, see our guide on renovation basics. That article covers the principles that apply across all manufactured home renovation projects, from prioritizing work to managing contractors.

For a detailed breakdown of costs specifically for door replacement, the companion article on door replacement cost walks through material and labor pricing for every door type with DIY vs. hired-out comparisons.

Ready to Start Your Door Replacement Project?

Mobile home door replacement is one of the highest-return-per-dollar renovation tasks in manufactured housing when done correctly. A fresh exterior door changes curb appeal immediately. New interior doors signal to buyers and tenants that the home has been properly maintained.

The key is sourcing the right product from the start, a manufactured home specialty supplier who stocks 76-inch pre-hung units with 3.5-inch jamb depths. Measure the rough opening, order the correct door, and either hire a handyman familiar with manufactured homes or tackle the installation yourself if you have the tools and the time.

Get the measurements right, source from the right supplier, and seal the exterior properly. That is the whole formula.

If you want help planning a manufactured home rehab budget or connecting with contractors in your market, reach out through the contact page.

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