G&S
BUILT FROM THE GROUND UP
Frequently Asked Questions
Got a question about your historic oast cowl or hop kiln? We have the answers.
How long does a traditional oast cowl repair or restoration take?
From start to finish, a standard cowl refurbishment typically takes around four weeks.
Removing the cowl with a crane is fast and causes very little disruption, taking around an hour.
Once removed, the building is securely capped to protect your kiln from the weather and any nesting wildlife.
I have an urgent job – how soon can you book me in?
If you have a single cowl, we can typically fit your repair into our working schedule very quickly.
For larger jobs involving three or more cowls, we usually need to book the work about a month in advance.
However, if you have a genuine emergency—like an imminent event or severe structural damage—we will do absolutely everything we can to jump you to the front of the queue!
Do you build brand new cowls from scratch?
In some cases, where the cowls have been severely damaged, it may be more cost-effective to build a new traditional wooden cowl rather than repair it.
New cowls typically take two weeks to construct and then one week to paint.
We use treated Russian/Scandinavian redwood to ensure the structure is highly weather-resistant and durable.
Do you offer site visits and quotes?
Yes, we always prefer to meet our customers in person to discuss cowl repairs and inspect the structure.
We provide a free, no-obligation visit to check the access requirements and understand exactly what you need.
Following the visit, we will provide a full written quotation with a clear breakdown of costs.
Are fibreglass (GRP) cowls better than traditional wooden ones?
Fibreglass cowls are often sold as a "maintenance-free" option, but in practice, they are almost always a false economy.
After about seven years, the internal bolts and fixings frequently rust solid, making them impossible to maintain.
Fungi can also creep under the fibreglass surface, making it impossible to ever clean the cowl back to white.
Traditional wooden cowls are the authentic choice, whereas fibreglass is unproven and deteriorates at a much faster rate.
My kiln roof is leaking, what should I do?
Please contact us immediately so we can advise you on the best emergency steps to take.
A leaking roof often means the cowl is no longer weather-tight or is failing to turn, which can cause severe internal water damage if ignored.
Do you offer emergency oast cowl repairs?
Yes! We provide an emergency call out service for severe roof damage across Central Kent and Sussex. If you have a dangerous structural issue or a major leak following a storm, please call us immediately. We prioritise urgent heritage repairs and will do absolutely everything we can to provide a same day attendance to make your listed building safe and watertight.
Why is my oast cowl creaking, making noises, or not turning?
If your cowl is making a squeaking, banging, or knocking sound, book a service immediately to prevent future damage and stop water leaking into your roof.
Creaking is common, but the noise can be completely eliminated by climbing inside, lubricating the ironwork, and making sure the cowl turns freely.
How often should a cowl be repainted or checked?
We recommend that cowls be checked and repainted approximately 6 to 7 years after their last maintenance.
Regular maintenance ensures the cowl is fully weatherproofed and prevents costly problems with the wood and ironwork.
Should I get my oast cowl cleaned in situé?
If your oast cowl is timber, cleaning it in place is not advised as it will cause further damage and rot to the structure.
If it is a fibreglass (GRP) cowl, we do offer a dedicated cleaning service. However, if they have been left too long, the algae has a habit of eating its way into the coating. This is incredibly hard to remove, so a full refurbishment may be advised.
Can I customize the motif on the weather vane?
Yes! While the 'Invicta' prancing horse is the traditional symbol of Kent, the finger (or vane) can feature almost any motif.
Historically, farmers used animals or hunting scenes. Nowadays, homeowners often choose motifs that reflect their own interests, from sailboats and dragons to tractors and theatrical faces.
What is the difference between Kent, Sussex, and West Midlands cowls?
Kent Cowls: The standard cowl with tapered weatherboards and an open back to vent air.
Sussex Cowls: Distinguished by their 'blinkers' or flat side panels at the front, giving them a hooded appearance.
Hereford & Worcestershire Cowls: These West Midlands hop kilns do not have a cap, but instead feature weatherboards that meet in a pointed top.
Do I need listed building consent to repair my oast cowl?
Because most traditional oast houses and hop kilns are Grade II listed, complete removals or modern material alterations often require local consent.
However, standard "like-for-like" timber repairs, repainting, and routine maintenance usually fall under general upkeep and do not need formal permission.
As traditional heritage specialists, we can advise you on the best approach to ensure all restoration work complies with your local conservation guidelines.
Where can I buy replacement parts for my oast cowl?
We manufacture and supply bespoke replacement parts for all traditional oast cowls. Unlike general roofers who use cheap off the shelf fibreglass, we hand build the exact timber replacement parts your specific kiln needs directly in our local workshop. Whether you need new wooden louvres, bearings, or custom leadwork, we supply and fit the highest quality traditional parts.
The Most Important Question
How much does it cost to repair an oast cowl in Kent and Sussex?
Every historic property is unique, but our basic oast cowl servicing and maintenance checks start from just £250. Mid level repairs involving replacement timber louvres or lead flashing work typically range between £300 and £800. For major structural rebuilds, we provide a completely transparent and honest custom quote.
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When you hire G&S, you get premium heritage expertise without the inflated corporate price tag. Unlike general roofers who buy cheap off the shelf parts, we hand build every single frame from scratch using traditional timber straight from the local sawmill.
We believe in honest pricing for true traditional craftsmanship. Our rates are highly competitive, completely transparent, and consistently beat larger companies. This ensures you get the absolute best quality without ever being ripped off.