Slough · England
East Burnham External Mastic
External mastic for East Burnham, by sealant specialists with 20+ years’ experience. 180+ five-star Google reviews and a 4.9 rating.
- Sealant that has lost its bond to the brick or render
- Gaps where render, brick and frames meet
- Failed sealant between panels on a façade
What affects the quote in East Burnham
The quote reflects the job in front of us. We look at:
- Working hours on commercial sites
- Access and height
- How much old sealant there is and how hard it is to remove
- How much there is to do
Every job is a little different, so each one gets its own quote. Size, access and the product the joint needs all make a difference.
Asking for a quote
The more you tell us, the more accurate the quote. When you get in contact, it helps to mention:
- A few pictures by email, if you can
- Where the job is, and your postcode
- Any access issues, like height or stairs
- If it’s domestic, commercial or a hotel
It all starts with a short chat. Describe the problem, the location and the size of the job, and we will explain how we’d tackle it. Whenever you are ready, call 0345 464 0079 or email us.
External mastic in East Burnham, done properly
We are ARBOMaster approved applicators, and each external joint gets a sealant suited to it. Porous or awkward surfaces are primed where the sealant needs it, and we do not skip that step. Common call-outs are for moss and dirt in joints with no sealant left and failed sealant between panels on a façade, on concrete & block, façade panels and copings & trims.
External sealant needs dry, clean surfaces, so work around East Burnham is planned for dry weather. Let us know about access to every wall, plus any garages or outbuildings.
All of our work is guaranteed for twelve months.
- Location
- East Burnham (SL2)
- Wider area
- Slough
- Guarantee
- 12 months on all our work
- Quote
- A clear quote up front
- Phone
- 0345 464 0079
- Updated
- 26 October 2026
Nearby places to East Burnham
Also in East Burnham
Do you need external mastic in East Burnham?
UV, rain and frost all age exterior sealant. In time it goes hard, crazes on the surface and stops stretching, so the next time the wall moves, it splits or pulls away.
Most people get in touch when they notice one of these:
- Movement joints filled with mortar instead of sealant
- Failed sealant between panels on a façade
- Sealant that has lost its bond to the brick or render
- Weeds or debris growing in open joints
For an older house near a landmark such as St John the Evangelist, the joints between older walls, newer extensions and the roofline need a sealant that can move.
Questions to ask before booking
- How the surfaces are prepared before sealing
- Whether you can choose the colour
- How long to leave it before use
- What guarantee comes with the work
Honest limits
Some problems need a builder, plumber or other trade rather than us:
- Loose or hollow render, which needs re-rendering
- Cutting new joints into brickwork, which is building work rather than sealant work
- Rising or penetrating damp from elsewhere in the wall
If you’re not sure, just ring 0345 464 0079 or drop us an email and we’ll give you a straight answer before you book.
Joints and surfaces we work on
- Joints between brick and frames
- Render & cladding joints
- Copings & trims
- Concrete & block
- Façade panels
- Brickwork movement joints
DIY versus a professional finish
What a professional job adds is preparation and the right product. Joints are cleaned back to sound surfaces and dried, and the sealant is matched to the joint and its conditions, and the work is guaranteed for a year.
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 doesn’t work out, we can still put it right.
What external mastic looks like in East Burnham
Historic houses like Cliveden (about 2.8 miles west) are a reminder that the area around East Burnham has older buildings as well as new. In older buildings, older walls and rooflines need a sealant that moves with them and suits the material. London and the South East are among the drier parts of the UK, though outdoor sealant still has to go onto a dry joint, so the forecast decides the day.
If you look after a building such as Caldicott School, its movement joints, gutters and trims need looking after like any other building’s. Letting a property close to Burnham station? Then split movement joints are easy to miss on a rental until damp shows inside.
East Burnham is about 2 miles north of Slough, in Slough. East Burnham gets the same service as everywhere we cover: the old material taken out, joints prepared properly and a 12-month guarantee. Our area takes in 31 places across Slough, large and small. You can also see our page for Reading, about 17 miles away.
Work in SL2 is quoted and booked the same way as anywhere else. If you need external mastic at a property on Thompkins Lane, Stoney Lane and Hawthorn Lane or a nearby road, we can help. 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). Within a short drive, we also cover 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).
Near you in East Burnham
We work in homes and buildings around St Mary's Farnham Royal CofE Primary School, The Crown Public House and Beechwood School, among other places. The closest station to East Burnham is Burnham station, about 1.9 miles south-west of the centre. A little further out are Wexham Park Hospital (2.4 miles south-east) and Windsor Castle (4.5 miles south). Green spaces nearby include Burnham Beeches and Taplow Lake.
How the visit works
We work through the job in order: protect, prepare, seal, tidy. Typically it takes a few hours to a few days, depending on the length of joint and the access, and the area is left clean. Somewhere like East Burnham needs a little journey planning: let us know about lanes, gates and parking. Everything for the job comes with us, so a second trip is avoided where possible.
- First we look over the joints with you, agree which to renew and talk through access.
- We cut out the failed sealant and rake out any dirt or growth.
- Both sides are cleaned back to sound material and primed if needed.
- We push in closed-cell backing rod so the sealant is the right depth and bonds to the sides only.
- A flexible exterior sealant is applied and tooled in a colour to suit the wall.
Preparing for the visit
- For business premises, tell us about site rules or sign-in
- Tell us about any previous sealing or DIY attempts
- Clear items away from the joints we’re working on
Get a quote
We don’t publish a price list. Instead, your job gets its own clear quote. To arrange one, ring 0345 464 0079 or drop us an email.
Related advice
FAQs for East Burnham
Can you help a landlord with a rental near Burnham station?
Yes, rental work is part of what we do. You can call 0345 464 0079 or drop us an email with the address and a few details, and we will give you a fixed price before we start.
Is East Burnham within the area you cover?
Yes, we do. We work across London and the South East, and smaller places are part of that. Longer journeys are simply planned in advance.
Can you work on commercial sites?
Yes, regularly. We can plan bigger jobs in stages.
Will the new joint stand out?
Exterior sealants are made in a range of colours, from greys and browns to whites and stone shades. We pick the one that suits your wall best.
Do I have to be there?
That depends on where the joints are. For work indoors, someone needs to let us in.
How long does external mastic take?
It depends on the size of the job, but as a guide it takes a few hours for a handful of joints, longer for a whole elevation. We’ll tell you when we quote.
What sealant do you use?
It depends on the joint: sanitary silicone where it gets wet, and sealants suited to movement or weather elsewhere. Brands we use include Arbo and Everbuild.
Should I point up the gap in my brickwork?
No. Cement or mortar cannot stretch, so the joint stops doing its job. If it has already been filled, we can generally cut it out and reseal it.
Why it’s worth doing now in East Burnham
Low-modulus sealants stretch easily, so they put less strain on the joint edges. That matters on brick, render and concrete, which can be weaker at the face. Too stiff a sealant can pull at the edges and break them. Around East Burnham, older homes often have timber in their floors and frames, where water from a failed joint can cause rot if it’s left.
What it costs depends on the size of the job, how much old material has to come out and access to the work. We give a clear quote before any work starts.
Why us?
- Any old sealant cut out fully, not covered over
- Experience in homes, commercial sites and hotels
- Colour agreed with you before work begins
- A choice of colours where the product allows
Different surfaces, different methods
Joints between dissimilar materials
Wherever two materials meet, they move differently. A flexible sealant bridges the two so the movement is taken up.
Render joints
Render has movement joints and stop beads that need sealing. We reseal them with a flexible exterior sealant that suits the render colour.