What our aluminum capping service includes
Aluminum capping covers wood window frames, door surrounds, fascia boards, soffit returns, garage door trim, gable trim, and any other exterior wood that you'd otherwise be repainting every five years. We use heavy-gauge prefinished aluminum coil bent on-site with a brake to fit your exact profiles.
Every job includes proper measurement, custom bending to match the existing trim profile, hidden fastening where possible, caulked joints with quality exterior sealant, and clean overlaps that shed water. Colour is matched to your siding, soffit, or chosen accent.
Capping pairs naturally with siding, window installation, and full exterior renovations — we often bundle these together for a coordinated finish.
Common problems homeowners face
Painted wood trim is a constant maintenance cycle. In Huron County's freeze-thaw climate, exterior paint cracks and peels within 5–7 years on most homes. South and west exposures fail faster. The result is bare wood, water absorption, and eventually rot at the joints and sills.
We also see a lot of bad capping — installed loose, with too few breaks, with raw edges showing, or fastened straight through the face with exposed screws. Done wrong, capping looks worse than the wood it's hiding and traps moisture against the trim underneath.
And the worst case: capping installed over already-rotted wood. The aluminum hides the damage but doesn't stop it, and now you can't see the rot until it's gone through the wall.
Signs you need this service
- Peeling or cracking paint on window or door trim
- Visible wood rot at sills, jambs, or fascia boards
- You're tired of repainting exterior trim every few years
- Existing capping is dented, faded, or pulling loose
- Brand new windows still have raw wood exterior trim
- Soffit and fascia look mismatched or aged
- You want a fully coordinated, low-maintenance exterior
The benefits of hiring a professional
Capping eliminates the paint cycle on exterior trim, which is one of the most consistent ongoing maintenance costs of homeownership. Done once and done right, it lasts 25+ years with essentially zero upkeep.
It also genuinely improves the look of a home. Crisp, consistent profiles around windows and doors, clean fascia lines, and matched colours pull the whole exterior together. It's the difference between a home that looks finished and one that looks lived-in.
And it protects what's underneath. Properly installed capping sheds water away from the trim, keeping the wood dry, the windows sealed, and the structure protected.
Why Harmsway Construction is the right choice for aluminum capping
We bend our own capping on-site with a portable brake — no factory-bent generic profiles that don't quite fit. Every break is custom to your home's actual trim profile.
We don't cap over rot. If wood underneath is failing, we replace it before capping. Cutting that corner is the single most common mistake we fix on other contractors' work.
Clean lines, hidden fasteners, sealed joints, and colour-matched coil. That's the standard, every job, every time.
Local expertise across Huron County
We provide aluminum capping services across Brussels, Huron County, and surrounding towns including Wingham, Blyth, Listowel, Seaforth, Clinton. Rural Ontario homes have their own challenges — high winds, ice damming, and harsh seasonal swings — and we build for them.
Frequently asked questions
What colours can capping be? Dozens — including all common siding colours plus accent colours like black, bronze, and forest green.
Will capping rust? Aluminum doesn't rust. The prefinished coating is also UV-stable and warrantied for decades.
Can you cap over existing capping? Sometimes, but we usually recommend removing old capping to inspect the wood underneath first.
Does capping void window warranties? No, when installed properly. We follow manufacturer install requirements.