Surrey · England
Thursley Window Mastic
Mastic around window and door frames, sills and patio doors for homes and businesses in Thursley and across Surrey. ARBOMaster approved applicators, fully insured, with a one-year guarantee.
- Sealant in the wrong colour for the frame
- Mastic that has split away from the wall
- Cracked internal joints between frame and plaster
Window mastic in Thursley, done properly
The mastic around a window or door seals the gap between the frame and the wall. When it cracks, hardens or pulls away, draughts and rain get in. The old mastic is removed and the joint resealed with a flexible exterior sealant. If you have white mastic on grey or black frames and untidy mastic left by window fitters, we can put it right, whatever the surface.
Around Thursley, many homes face open ground, so their windows and doors take the full weather. That exposure dries out and cracks the mastic around frames and sills faster.
All our work comes with a one-year guarantee, wherever you are in Surrey.
- Place
- Thursley (GU8)
- Wider area
- Surrey
- Cover
- A year, on every job
- Quotes
- A clear price before any work starts
- Call
- 0345 464 0079
- Page updated
- 26 October 2026
Thursley homes and the weather
Compared with the north and west, the South East gets less rain, though outdoor sealant still has to go onto a dry joint, so the forecast decides the day.
Letting a property close to Witley station? Then cracked frame mastic tends to show up as a draught or damp complaint, so it’s worth checking between lets.
Thursley is about 5 miles south-east of Farnham, in Surrey. Our applicators cover window mastic for homes and businesses in Thursley. 395 places in Surrey are on our list, large and small. There’s also a page for Crawley, about 23 miles away.
We work across GU8 for window mastic and the streets around it. Streets in the area include The Street, The Lane and Dyehouse Road, all of which we cover. We also cover Pitch Place (1 mile west), Rushmoor (2 miles west), Tilford Common (2 miles north-west), Green Cross (2 miles south-west) and Elstead (2 miles north). Larger places within reach include Guildford (9 miles north-east), Woking (13 miles north-east), Camberley (13 miles north), Farnham (5 miles north-west), Frimley (11 miles north) and Haslemere (4 miles south).
What’s near Thursley
Around Thursley, our work takes us to homes and buildings near Three Horseshoes pub and the streets around them. The nearest railway station is Witley station, about 3.1 miles east. Well-known places in the area include Milford Hospital (4 miles east). For a walk, there’s Upper Lake and Gibbet Hill.
Common questions in Thursley
Will you come out to Thursley?
Yes, smaller places are covered as well as towns. Our work covers London and the South East. Just mention lanes, gates or anything else about the route when you book.
Can you help a landlord with a rental near Witley station?
Yes. We work for landlords and agents as well as householders. Just phone 0345 464 0079 or send us an email with the address and what needs doing, and we’ll give you a clear price.
Can you work on commercial sites?
Yes. Hotels, offices and other businesses use us.
Can you do several jobs on one visit?
Yes. Several rooms, windows or areas can go on one quote.
Will there be a smell?
There can be a smell while the sealant cures. Opening a window helps.
Can you get sealant to suit coloured frames?
Yes. We can use white, brown, anthracite grey, black or clear, so the joint suits the frame.
How long does it take to reseal the windows on a house?
That depends on the number of frames, how they’re reached and the state of the old mastic. You will know the timing when we quote.
Is the new sealant paintable?
Not if it’s silicone. We choose the product with your decorating in mind, so mention it when you book.
Surface by surface
Window sills
Sills catch the water running down the glass, so the joints at each end and underneath matter. They’re cut out and resealed with exterior sealant.
Timber windows & doors
Timber moves with moisture as well as heat, so the joint must stay flexible. The paint or stain needs to be sound where the sealant meets it.
Common problems we fix in Thursley
Mastic ages in the weather. Sunlight dries the surface out, until it loses its stretch and starts to crack.
Common reasons people contact us are:
- Whistling draughts around closed windows
- White mastic on grey or black frames
- Cracked internal joints between frame and plaster
- Rain getting in at the frame or under the sill
For an older house near a landmark such as Church of St Michael and All Angels, the windows may be timber, sash or later replacements, and each needs the right sealant against the wall.
Before booking anyone
- What the quote includes, VAT included or not
- Which sealant they’ll use, and why
- What happens if the job turns out different
- Which colour the sealant will be
What we do, step by step
All our tools and materials come with us in the van. After a quick look at the joints together, the area is protected and the work begins. It normally takes most of a day for a typical house, less for a few frames. In a small place like Thursley, access is generally the main thing to plan. If the job is outside, mention outbuildings, exposed walls and how to reach them.
- First, we go round the frames with you and agree the list.
- We remove the old mastic and clean the frame edge and wall.
- Deep gaps get closed-cell backing rod to set the depth.
- The new sealant goes on in white, brown, anthracite grey, black or clear to suit.
- Every joint is tooled smooth and checked before we leave.
Before we arrive
- Tell us if parking is tricky
- Move anything stored near the joints
- Tell us about any previous sealing or DIY attempts
Get a quote
Getting a quote is simple: tell us what needs doing and where. Photos by email help us understand the job, and we’ll come back to you with a quote.
Advice
Nearby places to Thursley
What else we do in Thursley
Landlords, agents and businesses in Thursley
We also work for property managers and facilities teams. We can quote a run of properties together, and we are fully insured for the work.
Water getting past a failed joint can damage the building, which matters even more when someone else lives there. Keeping joints in good order is simple maintenance that we can handle for you.
Looking after it afterwards
After the cure time, these simple habits help:
- Repaint timber before it’s bare
- Wipe condensation off the frames
- Do not paint over the silicone
- Wash the frames with mild soapy water
Silicone can’t usually be painted, so if you are planning to paint the frames or walls, tell us beforehand. We can use a paintable sealant where that matters.
Signs to watch for: cracks in the mastic, gaps you can see light through, damp on the reveal or mould around the inside of the frame. If you notice one, it’s time to get the joint looked at.
How we quote for window mastic
For a quick quote, just ask. What matters most is:
- How easy the joints are to reach
- The size of the job
- How much old sealant there is and how hard it is to remove
- Any mould that needs treating
Instead of a standard rate, we look at what your job involves: how many joints, what’s in them now and how we reach them. You’ll know the price before we begin.
What to tell us for a quote
When you contact us, it’s useful to know:
- Any previous sealing or DIY work
- Any access issues, like height or stairs
- Where the job is, and your postcode
- If it’s domestic, commercial or a hotel
For a quote, call 0345 464 0079 or email us and tell us where the job is and what the problem looks like. We’ll give you a clear quote before any work starts.
DIY versus a professional finish
If you do try it yourself, take your time over the preparation: remove every trace of old sealant, clean and dry the joint, and follow the product’s cure time. If it fails, we can still redo it.
Too much sealant is as bad as too little. A thick, smeared bead looks untidy and does not move well, and the joint depth matters as much as the finish.