Slough · England
Sand mastic for sash & case windows in East Burnham, Slough
Traditional burnt sand mastic around sash and case windows and doors in stone and brick in East Burnham, with a 12-month guarantee on every job. Ask us for a quote.
- Gaps between timber frames and stone or brick
- Mastic that needs renewing before redecorating
- Old cement repairs round a window that have failed
Frames and glazing around East Burnham
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. With historic houses such as Cliveden (about 2.8 miles west) nearby, there’s older building stock in the area around East 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.
If you let a flat or house near Burnham station, older sash windows in a rental need their mastic kept sound to keep the weather out. Managing a site like Caldicott School? Then larger buildings have plenty of frames, and the mastic around each one ages.
East Burnham is about 2 miles north of Slough, in Slough. Wherever you are in the SL2 postcode area, we can carry out sand mastic at your property. East Burnham is one of 31 towns and villages in Slough we cover. For nearby work, see our Reading page.
Jobs for sand mastic in SL2 is quoted and booked the same way as anywhere else. Local streets include Thompkins Lane, Stoney Lane and Hawthorn Lane. We also cover the places around East Burnham: Farnham Royal (1 mile south-east), Britwell (1 mile south), Farnham Common (1 mile north-east), Egypt (1 mile north) and Littleworth Corner (2 miles north-west). We also work in nearby towns such as Chalvey (3 miles south), Langley (4 miles south-east), Upton (3 miles south-east), Datchet (5 miles south-east), Ditton (5 miles south-east) and Poyle (7 miles south-east).
Around East Burnham
In East Burnham, that means homes and buildings near St Mary's Farnham Royal CofE Primary School, The Crown Public House and Beechwood School. East Burnham’s nearest station is Burnham station, roughly 1.9 miles south-west. Nearby you’ll also find Wexham Park Hospital (2.4 miles south-east) and Windsor Castle (4.5 miles south). The countryside around East Burnham includes Burnham Beeches and Taplow Lake.
How we handle sand mastic in East Burnham
We renew sand mastic around sash windows and doors set in stone or brick. The old mastic is raked out, the joint is prepared and new mastic is shaped by hand. We work on stone surrounds, period & listed homes and tenement windows, and common reasons people get in touch are mastic round period door frames that has failed and tired mastic found when preparing windows for paint.
In a village or hamlet like East Burnham, older cottages and farmhouses often have timber windows set in stone or brick. Older buildings like these do not always suit modern silicone, so the sealant has to be chosen to suit the building.
You are covered for a year from the day we finish. If anything isn’t right with it, call 0345 464 0079 or send us an email.
- Location
- East Burnham (SL2)
- Region
- Slough
- Guarantee
- One year on every job
- Price
- A clear quote up front
- Phone
- 0345 464 0079
- Last updated
- 26 October 2026
Also near East Burnham
Also in East Burnham
What we can’t put right
We’d rather tell you now than do work that will not last, so here’s what sealant can’t put right:
- Whether work needs listed building consent
- Sashes that rattle, stick or won’t open
- Rotten sashes, sills or window boxes (a joiner’s job)
If you’re not sure, just call 0345 464 0079 or send us an email and we will give you a straight answer.
Surfaces we seal
- Brick reveals
- Tenement windows
- Timber door frames
- Period & listed homes
- Stone surrounds
- Sash and case windows
East Burnham: your questions answered
Will you come out to East Burnham?
Yes, we do. Our work covers London and the South East, and smaller places are part of that. The journey is planned ahead, so it helps to know about access.
Is East Burnham in your area for sand mastic?
Yes. Our work covers London and the South East, and East Burnham is part of that. You can ring 0345 464 0079 or email us and let us know what needs doing.
Will the old sealant be removed?
Yes. Sealing over old sealant is the main reason resealing fails early, and it’s something we never do.
What information do you need?
Let us know what needs doing and where. If we need more, we’ll ask.
How long does the job take?
As a guide, most jobs take a few hours for a single window, longer for several. Bigger jobs take longer, and we will say how long yours will take.
Will it make a mess?
We keep the work tidy. We protect what’s around the joints, and we clear up when we’re done.
Where is Mr Mastic based?
Our base is Crawley. Our area covers South East England, London and Scotland.
Is it possible to take out silicone and use sand mastic instead?
Yes, it’s a common request. The old silicone has to come out completely so the mastic can sit properly.
Why deal with it now?
Gaps round a sash window let in rain and draughts. Left, water can reach the timber and the wall, so dealing with it now protects both. Where a wall is exposed, as many are in small places like East Burnham, wind-driven rain gets into any failed joint, and damp in older walls is slow to dry out.
The cost reflects the work involved, not a rough estimate. That is why we ask about the job first and agree the price before starting.
Why East Burnham customers choose us
- 12-month guarantee on every job
- Arbo and Everbuild products
- Old sealant always removed completely
- More than 20 years in sealant work
Read what affects the cost or our reviews.
How it works
When we get to you, we compare the joints with what we discussed. If we find something unexpected, we talk it through with you first. After that, the work takes anything from a few hours to a full day, depending on how many windows. For a village or hamlet like East Burnham, the journey is planned in advance: tell us about narrow lanes, gates, long drives and where we can park. Everything for the job comes with us, so a second trip is avoided where possible.
- We check the window surrounds and agree which joints need renewing.
- We rake out the old mastic and clean the joint.
- Large voids are packed out first, so the mastic isn’t too thick.
- The mastic is mixed, pressed into the joint by hand and shaped.
- The mastic is finished to sit tidily against the stone or brick.
How to prepare
- Mention if the joints have been sealed before
- Mention any parking rules near the property
- Mention any leaks or damp you’ve noticed
Get a quote
For a quote, phone 0345 464 0079 or send us an email with the location and a short description of the problem. You’ll have a clear quote before any work starts.
Advice
Do you need sand mastic in East Burnham?
Age is the main cause. Sand mastic is a maintenance item like any pointing, depending on exposure and upkeep.
Keep an eye out for these signs:
- Tired mastic found when preparing windows for paint
- Draughts and rain around sash boxes
- Modern sealant on a period surround
- Mastic worn away on windows facing the weather
For an older house near a landmark such as St John the Evangelist, frames set in older brick or stone need a sealant that suits the wall as well as the frame.
What your quote should include
- Whether they seal over old material or remove it
- What the cure time is
- How the colour is chosen
- Which sealant they’ll use, and why
How we quote for sand mastic
Jobs vary more than people expect. The main factors:
- Any working-time requirements on site
- The size of the job
- Whether there’s mould to deal with
- How many areas need sealing
Doing several joints on one visit is generally more efficient than separate visits, so tell us about everything that needs sealing. You’ll get one clear quote for the whole job.
Asking for a quote
When you contact us, it’s useful to know:
- Access, such as stairs, a lift or height
- Whether it has been sealed before
- How many joints, rooms or windows are involved
- The problem you’ve noticed
Every job is quoted individually, so the first step is telling us about yours. Just ring 0345 464 0079 or send us an email with the details and send pictures if you have them.
Can I do it myself?
A DIY attempt doesn’t rule out a professional job. We cut it out and start again, so tell us about it when you ask for a quote.
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.
For landlords and businesses
We regularly work with letting and managing agents. Tell us the address, the job and how access works and we’ll give you a quote.
Mouldy or split sealant often shows up at the end of a tenancy, and it’s quick to put right between tenancies. We can quote for more than one property at once.