Kent · England
Knave's Ash Gutter Sealing
Sealing leaking gutter joints, end caps, fascias, soffits and roofline trims for householders, landlords and businesses in Knave's Ash. Fully insured, ARBOMaster approved and guaranteed for a year.
- Fascia boards with gaps between them
- Stop ends leaking at the end of a run
- Water dripping where gutter sections meet
What happens if it’s left?
Sealant won’t clear a blocked downpipe. We check the cause first and point you to the right trade if needed. Older cottages and farmhouses around Knave's Ash can have timber floors and frames, where water from a failed joint can cause rot if it’s left.
Doing several joints on one visit usually makes better use of the time than several visits, so tell us about everything that needs sealing. You’ll get one clear quote for the whole job.
Why choose Mr Mastic in Knave's Ash
- We never seal over old sealant
- Arbo and Everbuild products
- Tidy, careful work
- Anti-fungal sanitary silicone in wet areas
About our gutter sealing in Knave's Ash
Water dripping from a gutter joint can stain walls and soak the ground below. Often a reseal is enough if the gutter isn’t damaged. Common call-outs are for cracked sealant along roofline trims and water running down the wall below the gutter, on uPVC fascias, roofline trims and garage door frames.
Older homes in small places like Knave's Ash may be stone, brick or timber-framed, often with later extensions. Where one material meets another is where water usually gets in.
Big or small, it’s backed by our 12-month guarantee in Knave's Ash and across Kent.
- Where
- Knave's Ash (CT3)
- Region
- Kent
- Guarantee
- 12 months on all our work
- Quote
- A clear price before any work starts
- Telephone
- 0345 464 0079
- Last updated
- 26 October 2026
Honest limits
Sealant is not the answer to every problem, and we’ll tell you before any work starts. Sealant won’t put right:
- Brackets that have snapped or loosened
- Roof leaks, slipped tiles or failed flashing (a roofer’s job)
- Fascias that need replacing
If in doubt, ring 0345 464 0079 or email us and we will say what we think.
Where we work in Knave's Ash
- uPVC fascias
- Roofline trims
- Garage door frames
- Gutter end caps
- Soffit joints
- Gutter joints
What gutter sealing looks like in Knave's Ash
Knave's Ash is close to the coast, and homes near the sea take more wind-driven rain, with salt in the air closer to the shore. Both are hard on gutter, fascia and roofline joints, which can dry out and crack sooner where a building faces the weather. Rainfall in the South East is lower than in much of the UK, but outside sealant still needs a dry, clean surface, so outdoor work is planned around the forecast.
For landlords with property near Herne Bay station, a gutter joint that drips onto the wall can turn into a damp complaint, so it’s worth checking. Homes close to Church of the Holy Cross include some older properties, and the joints between older walls, newer extensions and the roofline need a sealant that can move.
Knave's Ash is about 2 miles south of Herne Bay, in Kent. From the centre of Knave's Ash to the outskirts, gutter sealing is available for homes and businesses alike. Knave's Ash is one of 922 places in Kent we cover for gutter sealing. For nearby work, see our Chelmsford page (40 miles or so).
Every address in CT3 is covered for gutter sealing. Whether your property is on Hicks Forstal Road and Hoath Road or anywhere close by, our applicators can take on the job. Other places close to Knave's Ash include Hoath (1 mile east), Maypole (1 mile north-east), Old Tree (1 mile north-east), Millbank (1 mile north-east) and Hicks Forstal (1 mile west). Within a short drive, we also cover Canterbury (5 miles south-west), Margate (10 miles east), Dover (15 miles south-east), Ramsgate (11 miles east), Broadstairs (12 miles east) and Whitstable (5 miles west).
Landmarks near Knave's Ash
Locally, jobs take us to homes and businesses close to Curtis Wood and Spires Academy. Knave's Ash’s nearest station is Herne Bay station, roughly 2.6 miles north-west of the centre. Well-known places in the area include St Martins Hospital (4.4 miles south-west). Green spaces nearby include West Blean and Thornden Woods.
How the job changes by surface
Garage door frames
A fresh seal around the frame stops rain getting in.
Gutter end caps
We seal end caps from the inside where we can reach, after cleaning and drying.
What else we do in Knave's Ash
Knave's Ash questions
Does the coastal weather in Knave's Ash affect outside sealant?
Near the coast, wind-driven rain and, nearer the shore, salt air make outside sealant work harder. Choosing the right sealant for the frame and wall, laid at the right depth, helps it last.
Can you help a landlord with a rental near Herne Bay station?
Yes. We work for landlords and agents as well as homeowners, and several properties can be quoted together. Just ring 0345 464 0079 or drop us an email with the address and what needs doing, and we will give you a clear price.
What do you put in the joint?
Each joint gets the product that suits it. Movement, water and weather all affect the choice.
Can I do it myself?
It depends on the job. Work at height, movement joints, fire-rated gaps and large areas are best left to a professional.
Can you seal over the old sealant?
No, and we never do. It can look neat for a few weeks, but the new layer lifts away from the old one. The old sealant has to come out completely.
Do you work for hotels and businesses?
Yes. Commercial and hotel work is a large part of what we do. Working times can be discussed when we quote.
Do you guarantee gutter sealing?
Our one-year guarantee covers every job, gutter and fascia work included.
Can you match the sealant colour?
Generally, yes. White, clear and grey are common, and other colours are available, and we agree the colour with you before any work starts.
What happens on the day
All our tools and materials come with us in the van. After a quick look at the joints together, we protect the area and start. It normally takes anything from an hour or two to a few hours. In a small place like Knave's Ash, access is normally the main thing to plan. For outside work, also let us know about exposed walls and any outbuildings involved.
- First, we find the drip and check the gutter isn’t cracked or sagging.
- The joint or trim is cleaned out and old sealant removed.
- We make sure the joint is dry before sealing.
- An exterior or gutter sealant is applied to the joint.
- The run is checked and any debris near the joints is cleared.
Before we arrive
- Keep pets and children clear of the area while we work
- Mention any tricky access
- Move anything stored near the joints
How to get a quote
Getting a quote is simple: let us know what needs doing and where, and roughly how big it is. A few pictures by email make the job easier to understand, and we’ll take it from there.
Advice
Common problems we fix in Knave's Ash
Water spilling over a blocked gutter is often mistaken for a leak. If the downpipe is blocked, water has nowhere to go so we check the cause first.
Signs it’s time to call us include:
- Damp patches inside below a leaking gutter
- Drips from gutter joints and end caps
- Wet patches on the wall under a gutter joint
- Earlier gutter repairs that have peeled off
Managing a site like Hoath Primary School? Then larger buildings have long runs of movement joint that eventually need resealing.
What your quote should include
- How hidden problems are handled
- What product goes in the joint
- Which colour the sealant will be
- Who turns up on the day
How we quote for gutter sealing
The price is agreed before any work begins. It takes into account:
- The number of rooms or windows
- Which sealant suits the joint
- The number and length of the joints
- Any working-time requirements on site
Rather than a set price list, we price the job in front of us: how many joints, what’s in them now and how we reach them. You’ll know the price before we begin.
Asking for a quote
Before you ask for a quote, have a think about:
- The problem you’ve noticed
- Any previous sealing or DIY work
- How we’d reach the joints
- A few photos by email, if you can
Quotes start with a quick conversation. Describe the problem, the location and the size of the job, and we’ll explain how we’d tackle it. When it suits you, call 0345 464 0079 or drop us an email.
Keeping the joints in good condition
After the cure time, these simple habits help:
- Get a dropping gutter looked at quickly
- Watch for drips in a downpour
- Watch the wall under the gutters for staining
- Check that water runs out of the downpipes
While checking gutters, glance at the fascia joints too. A small split is quicker to put right.
Rain getting in round a garage door frame can damage what’s stored inside. A reseal sorts it while the frame is sound.