Free written scope consultation - allowances, timeline, and change-order rules on paper before a single trade is scheduled
Boral Home Additions & ADU: The Sacramento Owner’s Guide
Adding square footage with Boral-trimmed openings, siding, or trim packages in Sacramento typically runs $45,000 to $130,000 for a complete home addition, and $90,000 to $220,000 for a full ADU build. Bradford Remodeling Co Sacramento stocks and installs Boral-compatible trim, siding, and exterior finish components, and we match specifications before the first cut. Most owners discover they need Boral-specific materials mid-project: the builder ordered the wrong profile, the original trim failed at a seam, or an inspector flagged non-compliant eave detailing.
Boral’s poly-ash trim and siding products hold up better than wood in Sacramento’s summer heat, but they fail when installed with the wrong fasteners or without proper expansion gaps. Curtis Lane has seen the same failure pattern in East Sacramento and Land Park: corners pulling apart because someone skipped the required gap. That’s a materials-and-method problem, not a product defect.
Which Boral Models This Applies To
Boral manufactures two product families most Sacramento homeowners encounter on additions and ADUs: TruExterior siding and trim, and the older Boral Versetta stone veneer line. TruExterior comes in board-and-batten profiles, lap siding, and trim boards in widths from 4 to 12 inches, in 16-foot lengths. Versetta stone panels are 8 by 20 inches and interlock with a built-in ledge system.
The compatibility gotcha most owners miss: TruExterior trim boards are sold in both a smooth face and a wood-grain face. If your existing trim is smooth and you order wood-grain, the patch job reads as a patch job from the curb. Check the back of any off-cut for the molded product code and the profile number before you order. Boral stamps every board. No label means the original installer ordered an aftermarket equivalent, and you’ll need a physical sample to match.
On the OEM-versus-aftermarket question: Boral does not license third-party equivalents for TruExterior. Aftermarket poly-ash boards exist, but they do not carry Boral’s 20-year substrate warranty and they expand at different rates in Sacramento’s 100-degree summer swings. We order OEM Boral for every addition and ADU where the original builder specified it. For stone veneer, we’ll quote Boral Versetta, then offer Belgard or Unilock panel equivalents if the client wants to compare cost per square foot.
Bradford Remodeling Co Sacramento is an independent contractor. We are not a Boral distributor or an authorized Boral repair center. We buy Boral products through supply channels open to licensed contractors and install them to the manufacturer’s written specification.
Styles & brands we work with
Signs Your Boral Home Additions & ADU Is Failing
- Corner trim gaps opening in summer. TruExterior expands with heat. If the original installer butted corners tight instead of leaving the manufacturer-specified gap, the boards crown and pull fasteners. This shows first on south-facing and west-facing walls in Sacramento.
- Caulk cracking along trim-to-siding seams within six months of install. Poly-ash moves differently than wood or fiber cement. Standard acrylic caulk fails early. Boral specifies a high-quality elastomeric sealant. Cheap caulk here means water gets behind the board and rots the substrate, not the trim.
- Nail pops or screw heads visible through painted trim. That is incorrect fastener sizing or spacing, and it is the leading cause of Boral warranty claims. The boards have not failed; the installation did.
- Lap siding buckling at the butt joints. Boral lap siding needs a specific expansion gap at every end. If boards are forced tight, the next heat wave buckles them. We see this on ADUs built fast in Rancho Cordova and Citrus Heights.
- Stone veneer panels shifting or separating on the lower courses. Versetta panels hang on a starter strip. If that strip was not leveled dead straight, every course above it drifts by panel four or five and the joints open.
See the difference
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After
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AfterReplacement Cost & What’s Included
For a full home addition or ADU where Boral is specified as the exterior finish, Sacramento pricing runs:
- Home addition (full build, Boral exterior spec): $45,000 – $130,000
- ADU construction (full build, Boral exterior spec): $90,000 – $220,000
- Garage conversion (with Boral trim package): $30,000 – $80,000
- Trim-only repair or re-clad on an existing addition: $2,500 – $9,000 depending on linear footage and access
- Stone veneer re-hang (Versetta panel replacement): $15 – $35 per square foot installed
Every Bradford quote is a written line-item scope. You see the board count, the fastener type, the sealant brand, the labor line, and the total before we open a wall. The price does not move at the door. Every project is backed by our 365-Day Done Right Promise: if the Boral install fails inside a year, we return and correct it at no charge. That guarantee is in writing, in your hand, at job close.
DIY or Call Us?
Replacing a single piece of Boral trim on a ground-level wall is doable if you have the right blade and know the expansion gap spec. Where owners go wrong: cutting poly-ash with a dull blade, which melts the edge; using the wrong sealant, which fails inside one Sacramento summer; and fastening into end grain, which does not hold. None of these are dangerous. All of them cost more to fix than paying for a correct first install.
For anything above one story, or any job involving stone veneer removal, hire a licensed contractor. Ladder work with 16-foot trim boards in Sacramento wind is not a weekend project. And for a full addition or ADU, this is structural, permitted, inspected work. Straight scope, firm price, no surprises after the drywall goes up. If yours is failing, call (279) 226-1509 and we’ll give you a written price to correct it.
FAQs
Boral warrants TruExterior for 20 years against substrate rot and termite damage, and in our Sacramento experience the product holds its warranty when installed to spec. The failure point is not the board; it is the install. Correctly gapped and sealed, these boards run decades. We regularly replace 15-year-old Boral trim that failed at year one only because the original contractor skipped the expansion gaps.
Yes, if the failure is cosmetic and localized: a cracked corner we can re-gap, a single buckled board, a seam that opened. Boral boards cannot be sanded or sculpted like wood, so any repair is a replacement of the affected piece, then a repaint of that run. If the failure repeats across multiple boards, the pattern is the problem, and a spot-fix will look right for about six months. Call (279) 226-1509 and we’ll tell you which camp you are in after one site visit.
A trim-only repair on a single wall runs one to two days, including paint. A full re-clad on a home addition runs three to five days depending on height, access, and whether the substrate needs repair. Full additions and ADUs run 8 to 20 weeks, and we give you a written timeline in the scope before we start.
We keep standard TruExterior trim profiles in the most common widths in our Sacramento yard, plus the correct fasteners, sealant, and starter strips for Versetta stone. Non-standard profiles and specialty widths get ordered direct, which adds two to four days. We also work with KraftMaid, Cambria, and Silestone when the job includes interior finishes, so the cabinet and surface specs match the exterior scope.
No. The written price we give before work begins is the price you pay unless you change the scope. If we open a wall and find rotted substrate behind the Boral, we show you, we photograph it, and we issue a written change order before we touch it. You approve the number before we spend a dollar of it. That is The Garrison Standard, and it has been since 2004.
Call Bradford Remodeling Co Sacramento at (279) 226-1509 for a free, written estimate on your Boral home addition or ADU project. A live person answers, 24/7.
Written by Curtis Lane, Owner, Bradford Remodeling Co Sacramento, serving Sacramento and nearby areas.
