Chimney Cowls and Roof Work in Cheshire
Anti-downdraught cowls, bird-guards, re-pointing & flashing - professionally fitted
At Gorilla Sweep & Stoves, we supply and install high-quality chimney cowls, bird-guards and terminals to improve draw, prevent rain ingress and keep birds and debris out of your flue. Our team also undertakes minor chimney re-pointing, pot replacement and lead flashing repairs associated with stove and flue performance — finished cleanly and to current best practice.
Why Fit a Chimney Cowl?
- Stops downdraught: stabilises the flue in windy conditions for safer, cleaner burning.
- Keeps rain out: reduces water ingress that can damage liners, stoves and masonry.
- Prevents nesting & blockages: bird-guards and mesh stop debris entering the flue.
- Improves performance: a correctly sized terminal can enhance draw and reduce smoke spillage.
- Protects your investment: prolongs flue and appliance life, supporting insurer requirements.
Popular Cowl & Terminal Types
| Type | Best for | Notes |
|---|---|---|
| Anti-downdraught cowl | Wind-exposed properties | Shaped to resist wind blow-back; improves stability of draw. |
| Bird-guard / rain cap | General use | Keeps birds and debris out; reduces rain ingress. |
| Spinner / rotating cowl | Problem downdraughts | Wind-assisted; useful on severe downdraught sites. |
| Disused terminal (cap) | Redundant flues | Allows ventilation while sealing against weather. |
| Gas / oil terminals | Appliance-specific | Use only manufacturer-approved terminals for fuel type. |
Our Roofline Services
- Chimney pot replacement and correct mortar bedding.
- Local re-pointing of chimney stacks (weathered joints / minor repairs).
- Lead flashing inspection and repairs to stop water ingress.
- Terminal height & spacing checks relative to roof ridge and adjacent structures.
- Ventilation advice and CO alarm positioning to support safe operation.
Note: major structural rebuilds and full scaffolding projects are quoted separately where required.
How We Work
- Survey: assess existing pot, terminal, liner size and roof condition; identify downdraught or water issues.
- Product selection: recommend the right cowl/terminal for your flue and location.
- Safe access: ladders or scaffolding as appropriate; we work cleanly and protect surrounding areas.
- Installation: secure fixings to pot/liner adapter; check alignment, mesh and weathering.
- Verification: smoke/draw checks where applicable and aftercare guidance.
Materials & Finish
We install quality stainless-steel and powder-coated cowls with durable fixings designed for UK weather. Where aesthetics matter, we offer terracotta-finish terminals to match traditional pots.
Service Area
Covering Wilmslow, Knutsford, Alderley Edge, Holmes Chapel, Prestbury, Macclesfield, Northwich and surrounding Cheshire villages, plus parts of South Manchester. Not sure if we reach you? Request a quote or call 07795 955191.
Why Choose Gorilla Sweep & Stoves
- Experienced roofline team with stove & flue expertise.
- Problem-solving approach to downdraughts, leaks and blockages.
- Quality components and neat, durable finishes.
- Fully insured with clear, itemised quotations.
- Local, responsive and tidy - minimal disruption to your home.
Request a Quote
Upgrade your chimney top and protect your stove with a correctly fitted cowl. Use our Request a quote form or call 07795 955191. We’ll confirm the right terminal for your property and provide a clear, fixed quote.