Kent · England
Window Mastic in Aylesham
We cover Aylesham for mastic around window and door frames, sills and patio doors. Old material cut out, joints cleaned and sealed neatly and a 12-month guarantee.
- Leaking joints at the ends of sills
- Cold air getting in at the frame edge
- Untidy mastic left by window fitters
Should I try it myself first?
Some jobs are best left to a professional: work at height, external movement joints, fire-rated sealant and large areas need the right product, the right access and the right method.
Sealing over old silicone is the commonest DIY error. New silicone will not bond to old, so it lifts and traps water and mould underneath. All the old material has to come out first.
Window mastic in Aylesham, done properly
Every window and door frame has a gap around it, and mastic is what closes it. When it cracks, hardens or pulls away, draughts and rain get in. Our applicators cut it out and replace it with a flexible, weatherproof sealant. If you’re dealing with cracked internal joints between frame and plaster and cracked or shrunken mastic around the frame, we can put it right, whatever the surface.
In a smaller place like Aylesham, some walls face open ground and catch the full force of the weather, so exposed windows and doors face the weather head on. The mastic around frames on those walls tends to age faster.
Every job is covered by our 12-month guarantee.
- Where
- Aylesham (CT3)
- Wider area
- Kent
- Guarantee
- 12 months on all our work
- Quotes
- Quoted before any work starts
- Phone
- 0345 464 0079
- Page updated
- 26 October 2026
Landlords, agents and businesses in Aylesham
Letting agents often deal with us directly. Tell us the address, the job and how access works and we’ll quote.
Landlords and letting agents in Aylesham can book us as well as homeowners. Sealant work between tenants is a simple way to keep a property in good order.
Different surfaces, different methods
uPVC windows
Plastic frames move a lot between a hot afternoon and a cold night, so we use a flexible, low-modulus sealant. White is the usual colour, with brown, anthracite grey and black for coloured frames.
Timber windows & doors
Older timber windows in stone or brick can suit sand mastic rather than modern sealant. We can talk through the options.
Your questions about window mastic in Aylesham
Is Aylesham in your area for window mastic?
Yes. We work across London and the South East, and Aylesham is part of that. Just phone 0345 464 0079 or send us an email with a few details of the job, and we will give you a clear price.
I let a flat near Aylesham station. Can you help?
Yes. We work for landlords and letting agents as well as homeowners. Just ring 0345 464 0079 or send us an email with the address and what needs doing, and we will give you a clear price.
Do you guarantee window mastic?
Yes. Our 12-month guarantee covers every job, inside or out.
Can new sealant go over the old?
No. The old sealant always comes out first, so the new joint bonds to clean surfaces.
What should I tell you?
Where the job is, what the problem is and roughly how big it is. If you can, email a few photos.
Do you work on first-floor windows?
Yes, in most cases. Access is planned before we start.
Can I paint over the new sealant?
It depends on the sealant. Silicone isn’t paintable, but some hybrid sealants are. Mention any painting plans before work begins.
Can you do the inside joint as well?
Yes. Draughts often come through the inside gap too, so it can be worth sealing both.
Do you need window mastic in Aylesham?
Sun, frost and rain wear sealant out. Sunlight dries the surface out, until it loses its stretch and starts to crack.
These are the problems we’re asked about most:
- Sealant in the wrong colour for the frame
- Mastic that has split away from the wall
- Old mastic that has gone black or come away
- Damp patches on the reveal after heavy rain
Letting a property close to Aylesham station? Then renewing tired window mastic between tenants heads off draught and damp complaints.
Before you book anyone
- Are they insured?
- Whether all the old sealant comes out first
- How the surfaces are prepared before sealing
- What the quote includes, VAT included or not
What happens on the day
We work through the job in order: protection first, then preparation, sealing and a tidy-up. For most jobs that takes a morning for a couple of windows and a door. In a smaller place like Aylesham, parking is seldom the issue; lanes, gates and long drives are worth mentioning. For outside work, side access and the height of the joints help us plan.
- We check each frame and agree which ones need doing.
- The old mastic is cut out and the surfaces cleaned back.
- Deep gaps are filled with backing rod to set the depth.
- A flexible, weatherproof sealant is applied in a colour to suit the frame.
- Finally we tidy up and check each joint.
Getting ready for the visit
- Tell us about any previous sealing or DIY attempts
- Keep pets and children clear of the area while we work
- Clear items away from the joints we are working on
Get a quote
For a quick quote, get us on the phone, or send an email if you’d rather. Describe what needs sealing and we will explain what’s involved.
Advice
Frames and glazing around Aylesham
Historic houses like Goodnestone Park (about 1.6 miles north-east) are a reminder that the area around Aylesham has older buildings as well as new. In older buildings, older timber frames in brick or stone need a different approach from a modern uPVC window. Compared with the north and west, the South East gets less rain, though outdoor sealant still has to go onto a dry joint, so the forecast decides the day.
Managing a site like Aylesham Primary School? Then the mastic around its windows and doors needs looking after like any other building’s. Homes close to St Peter include some older properties, and the windows may be timber, sash or later replacements, and each needs the right sealant against the wall.
Aylesham is about 6 miles south-east of Canterbury, in Kent. Whether you’re in the middle of Aylesham or further out, we cover window mastic for every kind of property, from flats and houses to offices and hotels. We cover 922 towns and villages across Kent, from the larger towns to small villages. Our Chelmsford page covers work nearby, about 47 miles away.
All of CT3 is covered for window mastic, from the main roads to the quietest streets. That includes homes and businesses on Market Place, Mexborough Square and Derwent Way. We also cover Bloodden (1 mile north), Adisham (1 mile north), Womenswold (1 mile south-west), Woolage Green (2 miles south) and Out Elmstead (2 miles south-west). Larger places within reach include Canterbury (6 miles north-west), Margate (13 miles north-east), Dover (8 miles south-east), Folkestone (10 miles south), Ramsgate (12 miles north-east) and Broadstairs (14 miles north-east).
What’s near Aylesham
Aylesham has its own railway station: Aylesham station. Other landmarks nearby include St Martins Hospital (5.2 miles north-west).
What happens if it’s left?
Once mastic fails, rain can get between the frame and the wall. Left long enough, it can stain inside walls, spoil plaster and rot wooden frames. A reseal is a much smaller job. Homes in smaller places like Aylesham can face more weather, and failed outside joints let damp into walls. Inside, a split seal lets water into floors and panels just as it would anywhere.
The cost reflects the work involved, not guesswork. That is why we ask a few questions first and agree the price before starting.
Why Aylesham customers choose us
- An ARBOMaster approved applicator
- A choice of colours where the product allows
- Full insurance on every job
- A sealant colour to suit the surroundings
Take a look at how sealant jobs are priced and customer reviews.
Also near Aylesham
What else we do in Aylesham
Honest limits
We’ll always be straight with you, so here’s what new sealant won’t do:
- A frame that has rotted at the joint
- A failed sealed unit that has misted up
- Broken hinges, locks or handles
If you are not sure, just phone 0345 464 0079 or send us an email and we’ll give you a straight answer.
Joints and surfaces we work on
- Timber windows & doors
- Window sills
- uPVC windows
- Composite doors
- Patio & French doors
- Aluminium frames