Surrey · England
Window Mastic in Grayshott
Problem with your window and door frames in Grayshott? We cut out the old, prepare the joints and apply the right sealant, with a 12-month guarantee.
- Sealant in the wrong colour for the frame
- Cracked internal joints between frame and plaster
- Rain getting in at the frame or under the sill
How we handle window mastic in Grayshott
Some gaps around frames are far deeper than they look. Packing it solid with sealant gives a joint that cannot flex, so deep gaps get backing rod first. The sealant then grips the two sides it should. We work on window sills, patio & French doors and uPVC windows, and the jobs we see most are cracked sealant at the sill ends and draughty joints inside around the window.
Around Grayshott, conservatories, garden rooms and patio doors are often part of the house. Those joints need the same attention as the main windows, and any older timber or sash windows need a sealant that suits them.
Whatever the size of the job, it’s backed by our 12-month guarantee in Grayshott and across Surrey.
- Location
- Grayshott (GU26)
- Wider area
- Surrey
- Guarantee
- One year on every job
- Quote
- A clear price before we start
- Telephone
- 0345 464 0079
- Page updated
- 26 October 2026
Grayshott questions
Is Grayshott within the area you cover?
Yes, we do. We work across London and the South East, from towns to the smallest places. The journey is planned ahead, so it helps to know about access.
I let a flat near Haslemere station. Can you help?
Yes, rental work is part of what we do. Just call 0345 464 0079 or email us and tell us about the property, and we will send you a clear quote.
Where is Mr Mastic based?
Mr Mastic is based in Crawley. Our applicators cover Grayshott.
How much does window mastic cost in Grayshott?
It depends on the job, so we quote each one individually. To get one, call 0345 464 0079 or email us and tell us what needs doing and where.
Will you leave a mess?
No. We protect the surfaces around the joints, and we clear up the old sealant and our materials before we leave.
Is the work guaranteed?
Yes. All our work carries a 12-month guarantee, and we’re ARBOMaster approved applicators.
Can I paint over the new sealant?
Not generally, if it’s silicone. We choose the product with your decorating in mind, so mention it when you book.
Can I do it myself?
That depends on the joint. Work at height, movement joints, fire-rated gaps and large areas are best left to a professional.
What happens if it’s left?
Getting a straight, even bead on an outside frame takes practice, especially on upper floors. A professional job is cut out properly, backed where needed and finished neatly, using a product chosen for the frame and wall. In an older home around Grayshott, damp from a failed joint can get into timber and plaster, and that’s a much bigger job than renewing the sealant.
A few things move the cost up or down: the old material and how easily it comes out, whether mould needs treating, and whether we need extra access for height. We take all of that into account in your quote.
What you get with us
- Quality sealants from Arbo and Everbuild
- Anti-fungal sanitary silicone in wet areas
- Over 20 years’ experience
- Domestic, commercial and hotel work
Read how sealant jobs are priced and our reviews.
How it works
When we arrive, we look over the joints with you first. We protect the surfaces around the joints before we start. The work normally takes a few hours for a few frames, or a day or more for a whole house. A visit to Grayshott is planned like any other: the time, the access and where to park are agreed in advance. If the work is outside, the weather plays a part, as sealant needs a dry surface.
- First, we confirm safe access to each frame.
- All the failed sealant is cut away.
- Frame and wall are cleaned and must be dry before sealing, and primed where the sealant calls for it.
- Backing rod fills deep voids and the sealant goes in on top.
- The joint is shaped to shed water and the area tidied.
Before we arrive
- Mention if the joints have been sealed before
- Plan for the work area to be out of bounds to pets and children
- Mention any tricky access
Getting a quote
Want a quote for window mastic? Please call 0345 464 0079 or send us an email with a few details. We’ll explain what we’d do and send you a clear quote before work begins.
Advice
Looking after it afterwards
Once the sealant has cured, a few habits help it last:
- Keep paint and stain on wooden frames in good order
- Keep drainage slots and sill grooves clear
- Walk round the house once a year and look at the joints
- Don’t use solvent cleaners on the joint
Keep sill grooves and drainage slots clear, so water can run away instead of sitting against the joint.
On timber windows, water behind the joint can lead to rot. Once wood has rotted, it needs repair before it can be sealed, so early resealing is worth it.
Landlord and commercial work in Grayshott
Hotels need rooms back in use, so we plan the work room by room. Hotel work is part of what we do, alongside homes and businesses.
We work for landlords and letting agents as well as householders. Sealant work between tenants keeps a property looking cared for.
What we can’t put right
It helps to know what we can’t do too:
- Misting between the panes of a double-glazed unit (that needs a new unit)
- Worn gaskets, brush seals or a door that has dropped
- Broken hinges, locks or handles
If you’re not sure, just ring 0345 464 0079 or email us and we will give you a straight answer before you book.
Surfaces we seal
- Aluminium frames
- Timber windows & doors
- Patio & French doors
- uPVC windows
- Composite doors
- Window sills
Windows and doors in Grayshott
Rainfall in the South East is lower than in much of the UK, yet outdoor joints still have to be sealed dry, so jobs are booked with the weather in mind.
For an older house near a landmark such as Church of St Luke, the windows may be timber, sash or later replacements, and each needs the right sealant against the wall. For landlords with property near Haslemere station, sound mastic around windows and doors keeps out the draughts and damp that tenants notice first. If you look after a building such as Grayshott Church of England Controlled Primary School, the mastic around its windows and doors needs looking after like any other building’s.
Grayshott is about 7 miles south of Farnham, in Surrey. Wherever you are in the GU26 postcode area, we cover window mastic for homes and businesses. We cover 395 towns and villages across Surrey, from the larger towns to small villages. Our Crawley page covers work nearby, about 24 miles away.
Work in GU26 is quoted and booked the same way as anywhere else. Streets in the area include Church Lane, Vale Wood Lane and Avenue Road. Close by, we work in Hindhead (1 mile east), Nutcombe (1 mile south-east), Beacon Hill (1 mile north), Whitmoor Vale (1 mile north-west) and Green Cross (2 miles north). Larger places within reach include Guildford (12 miles north-east), Camberley (15 miles north), Farnham (7 miles north), Frimley (14 miles north), Cranleigh (12 miles east) and Ash (9 miles north).
What’s near Grayshott
In Grayshott, that means homes and buildings near The Fox & Pelican pub, Woolmer Hill School and St Edmund's School and the streets around them. The closest station to Grayshott is Haslemere station, roughly 2.2 miles south-east of the centre. Nearby you’ll also find Haslemere and District Hospital (2.4 miles south-east). Green spaces nearby include Lynchmere Commons and Gibbet Hill.
Places near Grayshott
What else we do in Grayshott
How the job changes by surface
Aluminium frames
Aluminium moves with heat, and the frames are often slimmer than uPVC. A tidy bead in anthracite grey, black or a matching colour suits the frame.
uPVC windows
Some uPVC windows were sealed at fitting with a quick bead that never bonded. We cut it out, back any deep gaps and reseal properly.
DIY sealant or a professional job?
If you’ve already had a go yourself, that’s fine. We cut it out and start again, so tell us about it when you ask for a quote.
Sealing over old silicone is the commonest DIY error. New silicone will not bond to old, so it lifts and traps water and mould underneath. All the old material has to come out first.