Kent · England
Tenterden Window Mastic
Mastic around window and door frames, sills and patio doors for homes and businesses in Tenterden and across Kent. Fully insured, ARBOMaster approved and guaranteed for a year.
- Cracked sealant at the sill ends
- Mastic that’s falling out in pieces
- Hard, cracked sealant around windows
What we do, step by step
There is not much for you to do on the day. Point us to the joints and we will get on with it. The work itself takes anything from an hour or two to a full day, depending on how many frames there are. For a job in Tenterden, we agree the time, the access and parking before the day. Outdoor jobs depend on a dry day, since sealant needs a dry surface.
- We check how each frame can be reached safely.
- Old, cracked mastic is removed completely.
- Frame and wall are cleaned and must be dry before sealing.
- Backing rod fills deep voids and the sealant goes in on top.
- The joint is shaped to shed water and the area tidied.
Preparing for the visit
- Mention if the joints have been sealed before
- Tell us about access, such as stairs, a lift or high-level joints
- Clear items away from the joints we’re working on
How to get a quote
Getting a quote is simple: let us know the job and the location and its rough size. A few photos by email make the job easier to understand, and we’ll take it from there.
Advice
How we handle window mastic in Tenterden
Around Tenterden we seal all kinds of frames: from uPVC casements to timber and aluminium, plus patio doors, French doors and sills. The sealant is chosen to suit the frame material and the wall. If you have leaking joints at the ends of sills and water coming in at the bottom corners of a door, we can help.
Houses in smaller places like Tenterden can stand more in the open than those in a built-up town, so exposed windows and doors face the weather head on. The mastic around frames on those walls tends to age faster.
You are covered for a year from the day we finish. If anything is not right with it, call 0345 464 0079 or email us.
- Location
- Tenterden (TN30)
- Region
- Kent
- Guarantee
- One year on every job
- Quote
- A clear quote up front
- Telephone
- 0345 464 0079
- Updated
- 26 October 2026
What the job involves on each surface
Composite doors
Draughts round the door leaf usually come from worn seals or adjustment, not the mastic. We’ll tell you if that’s what we find.
Aluminium frames
Metal frames expand in the sun and are often slim, with little room for error. A tidy bead in anthracite grey, black or a matching colour suits the frame.
Frames and glazing around Tenterden
Historic houses like Smallhythe Place (about 2.2 miles south) are a reminder that the area around Tenterden has older buildings as well as new. Where a home is older, older timber frames in brick or stone need a different approach from a modern uPVC window. London and the South East are among the drier parts of the UK, but outside sealant still needs a dry, clean surface, so outdoor work is planned around the forecast.
For site and facilities teams at buildings such as Tenterden Infant School, its window and door frames need their mastic kept sound, just like a home’s.
Tenterden is about 9 miles south-west of Ashford, in Kent. Every kind of property in Tenterden can book us for window mastic. Every job comes with our one-year guarantee. Tenterden is one of 922 places in Kent where we work. Our Crawley page covers work nearby (38 miles or so).
Postcode districts we cover here for window mastic: TN30. Whether your property is on Golden Square, High Street and Station Road or anywhere close by, our applicators can take on the job. You will find Tenterden on the A28 and B2067, so it’s easy for us to get to. Nearby, we also carry out window mastic in Broad Tenterden (1 mile south), St Michaels (1 mile north), Strood (2 miles west), London Beach (2 miles north) and Parkgate (2 miles north-west). We also work in nearby towns such as Maidstone (15 miles north-west), Ashford (9 miles north-east), Paddock Wood (15 miles north-west), Bearsted (15 miles north), Park Wood (13 miles north-west) and Kennington (11 miles north-east).
Near you in Tenterden
Around Tenterden, our work takes us to homes and buildings near Turners Field, The Vine Inn and Homewood School and Sixth Form Centre, among other places. Other landmarks nearby include Tenterden and District Museum (less than half a mile west) and Benenden Hospital (3.4 miles west).
What we’re called out for in Tenterden
Some failures date back to when the windows were fitted. Sealant run over dust, wet brick or loose mortar didn’t grip properly, so it comes away long before its time.
People generally contact us after spotting one of these:
- White mastic on grey or black frames
- Cold air getting in at the frame edge
- Old mastic that has gone black or come away
- Rushed sealant from a window installation
Homes close to Parish Church of St Mildred include some older properties, and replacement windows fitted into old openings often leave uneven gaps that need backing and a flexible joint.
What your quote should include
- How much experience the applicator has
- What preparation is included
- Is VAT in the price?
- Whether they seal over old material or remove it
What affects the quote in Tenterden
The quote reflects the job in front of us. We look at:
- When we can work, for business premises
- Mould in or behind the old joints
- How much there is to do
- Whether old sealant or filler has to be cut out
A few things move the cost up or down: how much old sealant there is and how stubborn it is, any mould to treat, and whether the work is at height. Your quote takes all of that into account.
What to tell us for a quote
When you contact us, it’s useful to know:
- Whether it’s a home or a business
- Any previous sealing or DIY work
- Photos by email, if that is easy
- The problem you’ve noticed
For a quote, ring 0345 464 0079 or drop us an email and tell us where the job is and what the problem looks like. You’ll have a clear quote before work begins.
What happens if it’s left?
A cracked joint around a frame lets rain into the wall. Over time that can mean damp patches, damaged plaster and rotting timber. A reseal is a much smaller job. In an older home around Tenterden, damp from a failed joint can get into timber and plaster, and that is a much bigger job than renewing the sealant.
What it costs depends on the size of the job, how hard the old material is to remove and access to the work. You’ll have a clear quote before any work starts, so you know where you stand.
Why Tenterden clients choose us
- A sealant colour to suit the surroundings
- Every job guaranteed for a year
- Homes, businesses and hotels
- Sanitary silicone with an anti-fungal additive in wet areas
FAQs for Tenterden
Is Tenterden within the area you cover?
Yes, Tenterden is covered. We work across London and the South East, from towns to the smallest places. Longer journeys are simply planned in advance.
Is there a guarantee on window mastic in Tenterden?
Every job comes with our 12-month guarantee, wherever it is. We’re also fully insured and ARBOMaster approved.
Are you fully insured?
Yes, we’re fully insured.
Do I have to be there?
Access is agreed with you when the job is booked. Indoors, that normally means someone at home.
Which products do you use?
Quality sealants from brands including Arbo and Everbuild, chosen to suit the joint. We explain the product when we quote.
Is it worth trying it myself?
Sometimes. Preparation is everything: all the old sealant out, and a clean, dry joint. If it doesn’t work out, we can redo it.
Where do you work from?
We work from Crawley. We cover Tenterden and the rest of Kent, along with the rest of our area.
When is the sealant fully cured?
That depends on the sealant used, so follow the cure time we give you when we finish.
Keeping the joints in good condition
To keep the joints looking good and working properly:
- Keep paint and stain on wooden frames in good order
- Wipe condensation off the frames
- Keep jet washers away from the mastic
- Keep solvents and bleach off the sealant
Check the drainage slots in the frames aren’t blocked, so water can run away instead of sitting against the joint.
A failed joint lets water into the wall a little at a time. You might not see it until plaster blows or a damp patch appears inside. Catching it early keeps the fix to a reseal.
Towns and villages near Tenterden
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DIY sealant or a professional job?
The difference is mostly in the preparation and the product. Joints are cleaned back to sound surfaces and dried, and the sealant is chosen for how the joint moves and where it is, and the work is guaranteed for a year.
Some jobs are best left to a professional: high-level joints, fire-rated gaps, external movement joints and big jobs call for the right materials, safe access and experience.