Exterior repairs: siding, rot and leaks
Coastal Grove repairs and replaces siding, fixes rot and tracks down leaks on Sunshine Coast homes, and builds carports and covered outdoor spaces. We find where water is getting in before we cover it up. Repairs are priced after a site visit. A full siding replacement, including tear-off, new membrane, rainscreen, trim and flashing, typically runs $18–$28 per sq ft of wall for fibre cement (Hardie) and $20–$30 for cedar.
Prices updated September 2026 · Langdale to Egmont
What siding replacement costs
Per sq ft of wall, for a full replacement: tear-off, new weather barrier, rainscreen strapping, siding, trim and flashing at every window and door. Rot or sheathing repair found behind the old siding is priced as we find it. We give you a fixed quote after a site visit.
| Fibre cement (James Hardie) | $18–$28 per sq ft Lap or panel. Long-lasting, low maintenance and non-combustible. |
|---|---|
| Cedar | $20–$30 per sq ft Lap or board and batten. Needs periodic finishing. Cedar shingles quoted separately. |
| Engineered wood (LP SmartSide) | $15–$22 per sq ft The look of wood with less maintenance. |
| Vinyl | $11–$17 per sq ft Budget-friendly and low maintenance. |
| Aluminium (Longboard) | $22–$32 per sq ft Wood-look aluminium planks. Non-combustible and very low maintenance. |
What we handle
- Siding replacement and rainscreen retrofits
- Rot repair at trim, sills and wall bases
- Leak investigation
- Carports and covered decks
- Flashing and sealant repairs
From first call to finished
- 1
Investigate
We trace the water path before quoting the fix.
- 2
Scope
A written scope that separates the repair from the cause.
- 3
Repair
We fix the cause, then the damage.
What’s different here
Rainscreen retrofits
Many older Coast homes have siding nailed straight to the sheathing. A rainscreen gap lets walls dry.
Where to start
Not sure what’s wrong? Book an Envelope Care visit and we’ll rate what needs fixing now and what can wait.
Exterior repairs FAQ
How much does siding replacement cost on the Sunshine Coast?
In 2026, a full siding replacement runs about $18–$28 per sq ft of wall for fibre cement (Hardie), $20–$30 for cedar (shingles quoted separately), $15–$22 for engineered wood, $11–$17 for vinyl and $22–$32 for aluminium such as Longboard. That includes tear-off, new weather barrier, rainscreen, trim and flashing at every opening. Rot or sheathing repair behind the old siding is extra and priced as found.
What causes rot at the bottom of walls?
Usually siding too close to the ground or deck, missing kick-out flashing at roof edges, or failed caulking at trim. The fix is to correct the water path, not only replace the wood.
Do you do roofing?
We handle small roof repairs and flashing fixes, like a lifted flashing, a leak at a skylight or a few damaged shingles. Full re-roofs go to a roofing contractor we trust, and we can coordinate the work around your other exterior repairs.
Other ways we can help
Custom homes →
Licensed residential builder (BC Housing #53228) now booking custom and high-performance homes for 2027, Gibsons to Pender Harbour. 2-5-10 home warranty.
Renovations →
Kitchens, bathrooms, additions and whole-home renovations on the Sunshine Coast by a licensed general contractor. One team from permit to final walkthrough.
Decks →
Composite, vinyl and cedar decks with aluminium railings, built for Sunshine Coast rain. Trex, Valor vinyl membranes and RainEscape dry-below systems.
Get a quote
We aim to reply within one business day. For new homes and major renovations, we’ll set up a site visit.