Slough · England
Window & door mastic in Burnham, Slough
Window mastic for Burnham and the surrounding area: careful preparation, the right product and tidy work. Ask us for a quick quote.
- Cold air getting in at the frame edge
- Cracked internal joints between frame and plaster
- Cracked sealant at the sill ends
How we handle window mastic in Burnham
There are two joints on most windows. Outside, the mastic keeps rain out; the internal joint closes the gap to the plaster and stops draughts. We seal one or both, depending on what’s needed. We work on uPVC windows, window sills and timber windows & doors, and common reasons people get in touch are damp patches on the reveal after heavy rain and untidy mastic left by window fitters.
In smaller places like Burnham, homes range from older cottages to newer houses, with windows to match: timber, uPVC and aluminium. Each frame material needs the right sealant against the right wall.
All our work is covered by our 12-month guarantee.
- Where
- Burnham (SL1, SL6, SL2)
- Region
- Slough
- Guarantee
- 12 months on all our work
- Quotes
- A clear price before any work starts
- Call
- 0345 464 0079
- Page updated
- 26 October 2026
Common problems we fix in Burnham
A lot of older mastic was never designed to stay flexible. Once it has hardened, the frame’s movement tears it from the wall, and a gap opens along one edge.
Signs it’s time to call us include:
- Damp patches on the reveal after heavy rain
- Cracked or shrunken mastic around the frame
- Gaps between the frame and the inside reveal
- Gaps left after new windows were fitted
For an older house near a landmark such as St Peter's Church, the joint between an old wall and a newer frame is generally the first place rain gets in.
Before you book anyone
- When the joint can take water or movement
- Whether you can choose the colour
- What insurance they hold
- Whether VAT is included
Landlords, agents and businesses in Burnham
From a single let to a portfolio, the work is the same standard: old sealant fully removed, joints prepared properly and a 12-month guarantee.
Water getting past a failed joint can damage the building, which matters even more when someone else lives there. Resealing at the right time is simple maintenance.
What happens on the day
On the day, there’s very little for you to do. Show us the job and we’ll take it from there. The job generally takes most of a day for a typical house, less for a few frames, including the tidy-up. Parking around Burnham is generally easier than in a town centre, but mention any lanes, gates or long drives. For outside work, side access and the height of the joints help us plan.
- Each frame is looked over and we agree which ones need resealing.
- We remove the old mastic and clean the frame edge and wall.
- Deep gaps get closed-cell backing rod to set the depth.
- The new sealant goes on in white, brown, anthracite grey, black or clear to suit.
- We tool each bead neatly and check every joint is closed.
Preparing for the visit
- Keep children and pets away from the work area
- On commercial sites, let us know about site rules
- Where the joints are inside, avoid wetting them before we arrive
Get a quote
We quote each job on its own, so start by telling us what you need. Simply ring 0345 464 0079 or email us and describe the job.
Related advice
Places near Burnham
What else we do in Burnham
FAQs for Burnham
Will you come out to Burnham?
Yes, we do. We work across London and the South East, from towns to the smallest places. Longer journeys are simply planned in advance.
Can you do window mastic in Burnham?
Yes. We work across London and the South East, and Burnham is part of that. Just ring 0345 464 0079 or drop us an email with a few details of the job.
Can tenants book the work?
Of course. Ask your landlord first, and we can send them the quote if that helps.
Can you seal the gap between the frame and the plaster indoors?
Yes. The outside joint keeps the weather out, and the inside joint stops draughts and finishes the reveal. We can do either or both.
Will resealing my frames help with draughts?
If the draught is coming in around the frame, yes. If it’s coming through the window seals, we will tell you.
Is the new sealant paintable?
Silicone generally won’t take paint. Let us know beforehand, and we’ll use a paintable product where it suits.
Where are you based?
Our base is Crawley. Our area covers South East England, London and Scotland.
What does window mastic cost?
Every job is different, so each one gets its own quote. To get one, phone 0345 464 0079 or send us an email and tell us what needs doing and where.
Should I try it myself first?
If you do try it yourself, take your time over the preparation: take out all the old sealant, make sure the joint is clean and dry, and give it the full cure time. If it fails, we can still redo it.
Overfilling a joint is a classic DIY mistake. A thick, smeared bead looks untidy and does not move well, and the joint depth matters as much as the finish.
What the job involves on each surface
Timber windows & doors
On period timber windows, traditional sand mastic is sometimes the better choice. We’ll tell you which suits your home.
Aluminium frames
Large aluminium doors have long joints down each side and across the head, and the bottom joint sees the most water. We prepare and reseal every joint, backing the deep ones.
When it is not the sealant
We’d rather tell you now than do work that will not last, so here’s what sealant cannot put right:
- Rotten timber, which needs a joiner first
- Misting between the panes of a double-glazed unit (that needs a new unit)
- A sash or casement that will not close properly
If you’re not sure, just phone 0345 464 0079 or drop us an email and we will give you a straight answer before you book.
Joints and surfaces we work on
- Window sills
- uPVC windows
- Composite doors
- Aluminium frames
- Patio & French doors
- Timber windows & doors
Frames and glazing around Burnham
With historic houses such as Dorney Court (about 1.9 miles south) nearby, there’s older building stock in the area around Burnham as well as newer homes. Where a home is older, older timber frames in brick or stone need a different approach from a modern uPVC window. The South East is one of 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 The E-Act Burnham Park Academy, the mastic around its windows and doors needs looking after like any other building’s. Rented homes near Burnham station change hands often, and cracked frame mastic tends to show up as a draught or damp complaint, so it’s worth checking between lets.
Burnham is about 2 miles north-west of Slough, in Slough. Whether you are in the middle of Burnham or further out, window mastic is available for homes and businesses alike, from flats and houses to offices and hotels. Our Slough coverage runs to 31 places, Burnham among them. You can also see our page for Reading, about 15 miles away.
Here we cover the SL1, SL6 and SL2 postcode area for window mastic. If you need window mastic at a property on Stomp Road, Priory Road and High Street or a nearby road, we can help. Nearby, we also carry out window mastic in Huntercombe (1 mile south), Hitchambury (1 mile west), Taplow (1 mile west), Cippenham (1 mile south-east) and Rose Hill (1 mile north-west). Within a short drive, we also cover Chalvey (3 miles south-east), Langley (5 miles east), Upton (3 miles south-east), Datchet (5 miles south-east), Stoke Poges (3 miles east) and Ditton (5 miles south-east). As one of the bigger places in Slough, Burnham has homes, rented property and businesses of every kind.
Landmarks near Burnham
In Burnham, that means homes and buildings near Haymill Valley, Garibaldi Public House and Our Lady of Peace Catholic Primary and Nursery School, among other places. Burnham’s nearest station is Burnham station, about 0.7 miles south-east. Nearby you will also find The Reitlinger Bequest Museum (1.9 miles west) and Windsor Castle (4 miles south-east). Green spaces nearby include Burnham Beeches and Taplow Lake.
What affects the quote in Burnham
Jobs vary more than people expect. What affects the quote:
- Whether old sealant or filler has to be cut out
- Whether there’s mould to deal with
- How much there is to do
- The product the joint needs
What you pay reflects the work, not a rough estimate. That is why we ask a few questions first and give you a clear price before we start.
Helping us quote
Photos by email are helpful but not essential. Please mention:
- Access, such as stairs, a lift or height
- Whether it’s a home or a business
- Roughly how big the job is
- Whether it has been sealed before
To get a quote, phone 0345 464 0079 or drop us an email and tell us where the job is and what the problem looks like. We’ll give you a clear price before any work starts.