Surrey · England
Sand Mastic in Mytchett
Professional sand mastic in and around Mytchett, with old sealant always removed completely and a 12-month guarantee.
- Crumbling sand mastic round a window
- Modern sealant on a period surround
- Gaps round a timber door in stone or brick
About our sand mastic in Mytchett
Across Mytchett, we renew sand mastic around sash and case windows. Each joint is raked out, prepared and pointed by hand, finished to suit the masonry. We work on sash and case windows, period & listed homes and timber door frames, and people most often call us about gaps round a timber door in stone or brick and old cement repairs round a window that have failed.
Homes around Mytchett range from older properties to newer houses, and their windows range just as widely. The right sealant depends on the frame and on what it sits in.
Big or small, you get the same 12-month guarantee.
- Location
- Mytchett (GU16)
- Wider area
- Surrey
- Guarantee
- A year, on every job
- Quotes
- A clear price before work begins
- Call
- 0345 464 0079
- Page updated
- 26 October 2026
For landlords and businesses
We also work for businesses, from offices to washrooms and kitchens. For commercial premises, we can talk through working times when we quote.
If you manage several properties in or around Mytchett, several properties can be quoted together. Just tell us the addresses and what each one needs, and pictures by email help.
Also near Mytchett
Other services in Mytchett
Can I do it myself?
Some jobs are best left to a professional: work at height, external movement joints, fire-rated sealant and large areas call for the right materials, safe access and experience.
If you’ve already had a go yourself, that is fine. We cut it out and start again, so just mention it when you contact us.
How the visit works
The work is kept neat and contained to the area we are working on. The job normally takes a few hours per window, depending on the condition of the joints, and we tell you how long to leave it before we go. In a smaller place like Mytchett, parking is seldom the issue; lanes, gates and long drives are worth mentioning. If the job is outside, tell us about side access and how high the joints are.
- We look at the surrounds with you and agree the joints to renew.
- Old mastic and any loose material are raked out.
- We pack any deep voids first.
- We apply the mastic by hand and shape it.
- We dress the finish so it sits neatly against the masonry.
Preparing for the visit
- For business premises, tell us about site rules or sign-in
- For indoor joints, keep the area dry beforehand if you can
- Let us know about parking restrictions
Getting 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’ll explain what’s involved.
Related advice
Your questions about sand mastic in Mytchett
Do you cover smaller places like Mytchett?
Yes, we do. Our work covers London and the South East, from towns to the smallest places. Longer journeys are simply planned in advance.
Can you help a landlord with a rental near Farnborough North station?
Yes, landlords and agents are among the people we work for. You can call 0345 464 0079 or email us with the details for a clear quote.
How do I get a quote for sand mastic in Mytchett?
Every job is different, so each one gets its own quote. To get one, call 0345 464 0079 or drop us an email with a short description of the job.
When will the new mastic be hard?
The surface skins quite quickly and it hardens fully over a longer time. The weather and joint depth both affect it.
Do you hold any approvals?
Yes. We hold ARBOMaster approved applicator status, and we’re fully insured.
Do you offer different sealant colours?
In most cases you can choose. We’ll tell you which colours the right product comes in.
Is it possible to paint over sand mastic?
Sand mastic is normally left unpainted, as guidance on traditional windows advises. Ask us before decorating.
Which is right for my windows, sand mastic or modern sealant?
That depends on your windows. On many period windows, sand mastic looks right and suits the building, while modern frames normally get a flexible sealant.
What sand mastic looks like in Mytchett
The South East is one of the drier parts of the UK, yet outdoor joints still have to be sealed dry, so jobs are booked with the weather in mind. Historic houses like Wanborough Manor (about 4.9 miles south-east) are a reminder that the area around Mytchett 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.
Letting a property close to Farnborough North station? Then cracked sand mastic around sash windows lets in the draughts tenants complain about. If you live in an older home near Church of St Andrew, frames set in older brick or stone need a sealant that suits the wall as well as the frame. Managing a site like Mytchett Primary School? Then larger buildings have plenty of frames, and the mastic around each one ages.
Mytchett is about 2 miles south of Frimley, in Surrey. Mytchett gets the same service as everywhere we cover: old sealant removed completely, careful preparation and a one-year guarantee. Our Surrey coverage runs to 395 places, and Mytchett is one of them. Reading is on our list too, around 15 miles away.
All of GU16 is covered for sand mastic. You will find streets such as Wynfields, Coleford Close and Burgess Close, all of which we cover. You will find Mytchett on the B3411, which makes it straightforward to reach. Close by, we work in North Camp (1 mile south-west), Ash Vale (2 miles south), Farnborough (2 miles west), Cove (3 miles west) and Southwood (3 miles west). We also work in nearby towns such as Guildford (7 miles south-east), Woking (7 miles east), Camberley (3 miles north), Farnham (6 miles south-west), Egham (12 miles north-east) and Walton-on-Thames (15 miles north-east).
Near you in Mytchett
We work in homes and buildings around Henry Tyndale School, Prince of Wales pub and Sixth Form College. Other local landmarks include Frimley Lodge Park (0.6 miles north) and National Aerospace Library (1.4 miles west). The nearest railway station is Farnborough North station, roughly 1.1 miles north-west of the centre. A little further out are Frimley Park Hospital (2 miles north) and Royal Army Dental Corps Historical Museum (1.8 miles south-west). The countryside around Mytchett includes Danger Hill and Aunt's Pool.
Surface by surface
Sash and case windows
A sash window’s box frame sits in the masonry opening. Sand mastic seals the joint round it.
Timber door frames
Doors face weather and wear, so their mastic can fail sooner. We rake it out and renew it.
What happens if it’s left?
An open joint round the frame lets weather in. Left, water can reach the timber and the wall, so dealing with it now protects both. In a smaller place like Mytchett, wherever a wall is exposed, a failed outside joint is a real source of damp. Indoors, a failed seal lets water into floors and panels as it would anywhere.
Some things make a job bigger or smaller: how much old sealant there is and how stubborn it is, whether mould needs treating, and whether we need extra access for height. We take all of that into account in your quote.
Why choose Mr Mastic in Mytchett
- We’re fully insured
- Anti-fungal silicone where joints get wet
- ARBOMaster approved applicator
- 180+ five-star Google reviews
Read our cost guide and customer reviews.
How to look after the new joints
So the new joints stay in good condition:
- Have rotten timber repaired before new mastic goes in
- Don’t run silicone over sand mastic
- Check with your local planning authority if your home is listed
- Take care around the mastic when scraping paint
Look at the mastic when you look over the windows. Small cracks are easier to deal with early.
Good mastic helps keep the frame dry. Once it fails, water can sit against the timber, which can lead to rot.
What affects the quote in Mytchett
For a quick quote, just ask. The main things that affect it are:
- Which sealant suits the joint
- Access and height
- The size of the job
- Any mould that needs treating
Rather than a set price list, we price the job in front of us: the amount of work, the old material and the access. The price is agreed before we begin.
Asking for a quote
What to tell us when you ask for a quote:
- How many joints, rooms or windows are involved
- Any access issues, like height or stairs
- Photos by email, if that is easy
- The type of property
To get a quote, phone 0345 464 0079 or send us an email with the location and a short description of the problem. You will have a clear quote before we start.