Windsor and Maidenhead · England
North Ascot External Mastic
Movement joints in North Ascot need attention? We remove the old material, prepare the joints and seal them properly, with a 12-month guarantee.
- Panel joints letting water in
- Cracked joints where brick meets render or frames
- Water getting into walls through failed joints
External mastic in North Ascot
Where two different materials meet, such as brick and render or blockwork and metal, they move at different rates. A flexible sealant bridges the two where a rigid filler would soon crack. We work on joints between brick and frames, concrete & block and render & cladding joints, and common reasons people get in touch are movement joints filled with mortar instead of sealant and joints with sealant missing in places.
In and around North Ascot, older properties sit alongside newer ones, each with its own outside joints. Older gutters and trims need their joints resealed; newer brick and render need their movement joints kept sound.
All of our work is guaranteed for twelve months, in North Ascot and everywhere else we cover.
- Location
- North Ascot (SL5)
- Wider area
- Windsor and Maidenhead
- Cover
- One year on every job
- Price
- A clear quote up front
- Telephone
- 0345 464 0079
- Page updated
- 26 October 2026
What affects the cost of external mastic
For a quick quote, just ask. The main things that affect it are:
- How many areas need sealing
- Whether old sealant or filler has to be cut out
- Access and height
- Whether there’s mould to deal with
A failed joint rarely gets cheaper to fix by waiting, as water and mould keep getting in. If you are not sure whether it needs doing, phone 0345 464 0079 or send us an email for an honest opinion and a quote.
Asking for a quote
The more you tell us, the more accurate the quote. When you ask for a quote, tell us:
- What the problem is, such as mould, gaps, leaks or cracking
- Whether it has been sealed before
- If it’s domestic, commercial or a hotel
- A few photos by email, if you can
The more we know about the job, the more useful the quote. Tell us where the job is, what’s wrong and how much there is, and add pictures by email if you can.
Signs you need external mastic in North Ascot
Sunlight, wet weather and frost wear exterior sealant down. Over the years it hardens, cracks on the surface and loses its give, so the joint eventually tears or comes away from one side.
Most people get in touch when they notice one of these:
- Cracked joints where brick meets render or frames
- Weeds or debris growing in open joints
- Damp patches traced to an open external joint
- Brick movement joints where the sealant has split
If you look after a building such as Ascot Heath Church of England Junior School, movement joints, cladding joints and gutters on larger buildings need the same care as a house’s.
Questions to ask before you book
- Whether VAT is included
- What insurance they hold
- Whether you can choose the colour
- What preparation is included
Common questions in North Ascot
Do you cover North Ascot for external mastic?
Yes. Our work covers London and the South East, and North Ascot is part of that. Just ring 0345 464 0079 or email us with a few details of the job, and we will give you a clear quote.
I let a flat near Ascot station. Can you help?
Yes. We work for landlords and agents as well as householders. You can phone 0345 464 0079 or email us with the details for a clear quote.
What information do you need?
Just the basics: where it is, what you’ve noticed and how we reach it. After that, simply ring 0345 464 0079 or send us an email.
How long before the joint can be used?
That depends on the sealant used, so follow the cure time we give you when we finish.
Do you take out the old sealant first?
Yes, every time. New sealant won’t bond properly to old, so the joint is cleaned back first.
Do I need to be at home?
We need access to the joints, so we’ll agree that with you when we book. Indoors, that usually means someone at home.
Can you seal joints between render and window frames?
Yes. We cut out the old sealant, prepare both faces and reseal with a flexible exterior product. We pick a colour that works with both materials.
Should I point up the gap in my brickwork?
No. A mortar-filled joint can’t move, so the movement cracks the wall elsewhere. It needs a flexible sealant over backing rod.
When something else is needed
Some problems need a builder, plumber or other trade rather than us:
- Subsidence or other structural problems
- Loose or hollow render, which needs re-rendering
- Cracked brickwork or render that needs a builder or plasterer
Not sure which it is? You can ring 0345 464 0079 or send us an email and we will tell you honestly.
Joints and surfaces we work on
- Copings & trims
- Façade panels
- Render & cladding joints
- Joints between brick and frames
- Brickwork movement joints
- Concrete & block
Why deal with it now?
Mortar or ordinary filler might look like a quick way to close an open joint, but it stops the joint moving. The movement then cracks the brickwork or render nearby. A flexible sealant over backing rod is what the joint needs. Homes in smaller places like North Ascot 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.
Homes and businesses are quoted the same way: how much there is to do, how we reach it and what it needs. Ask us for a quote and we’ll go through it with you.
Why book with us
- Anti-fungal silicone where joints get wet
- You choose the colour before work begins
- Colour picked to suit the job
- A choice of colours where the product allows
What we do, step by step
Every visit runs the same way: we look at the joints together, protect the area around them, do the work and tidy away. It normally takes a few hours for a handful of joints, longer for a whole elevation. Parking around North Ascot is normally easier than in a town centre, but mention any lanes, gates or long drives. If the job is outside, tell us about side access and how high the joints are.
- Each joint is checked and the colour of the new sealant agreed.
- Failed sealant is removed back to clean, sound faces.
- Backing rod goes in so the sealant can stretch between the two faces.
- Primer is applied wherever the sealant needs it.
- We gun in low-modulus sealant and tool it neatly.
How to prepare
- Let us know if you’ve seen damp or leaks
- On commercial sites, let us know about site rules
- Let us know about earlier repairs to the joints
Get a quote
Call for a quick quote, or email us if that is easier. Tell us about the joints that need doing and we will explain what’s involved and give you a clear price.
Advice
Can I do it myself?
Sealing over old silicone is the commonest DIY error. New silicone won’t bond to old, so it peels away and traps moisture behind it. Everything old must be removed first.
Overfilling a joint is a classic DIY mistake. A heavy bead looks messy and copes badly with movement, and the joint depth matters as much as the finish.
Aftercare tips
So the new joints stay in good condition:
- Walk round the building once a year and look at the joints
- Keep movement joints as flexible joints, not mortar
- Deal with leaking gutters that soak the joints below
- Leave the joints unpainted unless we have said otherwise
Have a quick look at the joints each spring. Watch for splits, edges coming away or growth in the joint.
If you can see gaps, plants or bare sections in a joint, have it checked. Earlier resealing means a smaller job and a better result.
Nearby places to North Ascot
Also in North Ascot
Walls and rooflines in North Ascot
Rainfall in the South East is lower than in much of the UK, though outdoor sealant still has to go onto a dry joint, so the forecast decides the day. Historic houses like St Leonard's Hill (about 3.9 miles north-east) are a reminder that the area around North Ascot has older buildings as well as new. In older buildings, older brick and stone need a sealant that suits them, at the right joint depth.
In the older streets around Chapel of St Mary and St John, the joints between older walls, newer extensions and the roofline need a sealant that can move. Rented homes near Ascot station change hands often, and outside joints that have cracked can let damp into a rental, so check them between lets.
North Ascot is about 3 miles east of Bracknell, in Windsor and Maidenhead. Homes, rented property, offices and hotels in North Ascot can book us for external mastic, old or new, large or small. The work is guaranteed for a year. 57 places in Windsor and Maidenhead are on our list. For nearby work, see our Reading page (12 miles or so).
Jobs for external mastic in SL5 is quoted and booked the same way as anywhere else. That includes homes and businesses on London Road, Mansfield Place and Bowyer Walk. Neighbouring places we cover for external mastic include Brookside (1 mile north-east), Ascot (1 mile south-east), Plaistow Green (1 mile north-east), Woodside (2 miles north-east) and Winkfield (2 miles north). Further out, we also cover Maidenhead (7 miles north), Windsor (5 miles north-east), Boyn Hill (7 miles north), Cookham (10 miles north), Furze Platt (8 miles north) and Dedworth (5 miles north-east). North Ascot is among the bigger towns we cover in Windsor and Maidenhead.
Landmarks near North Ascot
We work in homes and buildings around Garth Hill College, Royal Hunt pub and LVS Ascot. The nearest railway station is Ascot station, roughly 1 mile south-east. Other landmarks nearby include Heatherwood Hospital (0.5 miles south-east) and The Lexicon (2.5 miles west). For a walk, there’s Virginia Water Lake.