Surrey · England
Window & door mastic in The Sands, Surrey
Our applicators work in The Sands on mastic around window and door frames, sills and patio doors. Old sealant removed completely, joints prepared properly and every job guaranteed for a year.
- White mastic on grey or black frames
- Cold air getting in at the frame edge
- Leaking joints at the ends of sills
How to look after the new joints
Simple care keeps the joints in good condition. Our advice:
- Make sure the drainage slots are not blocked
- Look round the frames every year or so
- Keep timber frames painted
- Use gentle cleaners on frames and sealant
Keep sill grooves and drainage slots clear, so water can run away instead of sitting against the joint.
Water trapped behind a failed joint can start rot in timber frames and sills. Once wood has rotted, it needs repair before it can be sealed, so it pays to reseal before that happens.
How we handle window mastic in The Sands
There are two joints on most windows. Outside, the mastic keeps rain out; the internal joint closes the gap to the plaster and stops draughts. Either or both can be done. If you have damp patches on the reveal after heavy rain and rushed sealant from a window installation, we can help, whatever the surface.
Outdoor sealant needs dry, clean surfaces, so work on frames around The Sands is planned for dry weather. Tell us about access to every side of the house, including upper-floor windows.
Every job is covered by our 12-month guarantee.
- Location
- The Sands (GU10)
- Region
- Surrey
- Guarantee
- One year on every job
- Price
- Quoted before any work starts
- Call
- 0345 464 0079
- Updated
- 26 October 2026
When it isn’t the sealant
A few problems are outside what sealant work can do:
- A sash or casement that will not close properly
- Misting between the panes of a double-glazed unit (that needs a new unit)
- Soft or decayed wood in the frame
If you are not sure, just call 0345 464 0079 or send us an email and we’ll give you a straight answer.
Joints and surfaces we work on
- Composite doors
- uPVC windows
- Patio & French doors
- Aluminium frames
- Timber windows & doors
- Window sills
Questions from The Sands
Do you work for landlords with property near Farnham station?
Yes, rental work is part of what we do. You can call 0345 464 0079 or email us with the address and a few details, and we’ll give you a fixed price before we start.
Can you do window mastic in The Sands?
Yes. We work across London and the South East, and The Sands is part of that. You can ring 0345 464 0079 or drop us an email and tell us what needs doing, and we will give you a clear price.
Are you an approved applicator?
Yes. We are approved under the ARBOMaster scheme.
Do you remove the old sealant?
Yes, always, and completely. New silicone does not stick to old silicone, so any old material comes out before anything new goes in.
Do you seal inside as well as outside?
Yes. Indoors, we seal between the frame and the plaster or reveal, using a paintable sealant if you want to decorate.
Do the sealants smell?
Some sealants have a smell while they cure, which fades as it sets. Opening a window helps.
Can resealing stop a draught around my window?
Yes, if the air is getting in around the frame. If it’s coming through the window seals, we’ll tell you.
What should I tell you?
Tell us what needs doing and where. If we need more, we will ask.
What affects the quote in The Sands
You’ll get a clear quote before work begins. It’s based on:
- Any working-time requirements on site
- Access and height
- Which sealant suits the joint
- How many rooms, windows or areas are involved
No two jobs are quite the same, so each one gets its own quote. Size, access and the product the joint needs all play a part, and we’ll explain the quote if you ask.
What we need to know
Photos by email are helpful but not essential. Please mention:
- The type of property
- Any previous sealing or DIY work
- Roughly how big the job is
- What the problem is, such as mould, gaps, leaks or cracking
Need a quote? Please phone 0345 464 0079 or drop us an email and tell us about the job. We will explain what we’d do and send you a clear quote before any work starts.
Leave it or put it right?
Not every sealant suits a window. Decorators’ caulk and bathroom silicone are not designed for outside joints that move. An exterior, low-modulus sealant stays flexible in sun and frost. Around The Sands, older homes often have timber in their floors and frames, where water from a failed joint can cause rot if it’s left.
The cost reflects the work involved, not a rough estimate. That’s why we ask a few questions first and agree the price before starting.
What you get with us
- A 12-month guarantee on all work
- Sanitary silicone with an anti-fungal additive in wet areas
- ARBOMaster approved applicator
- Any old sealant cut out fully, not covered over
Take a look at our cost guide and what customers say.
Nearby places to The Sands
What else we do in The Sands
The process
There’s no need to move everything out, just the space around the work. Everything nearby is protected, and the job takes a morning for a couple of windows and a door for a typical job. Somewhere as small as The Sands, access is often the only tricky part. For outside work, also let us know about exposed walls and any outbuildings involved.
- We check each frame and agree which ones need doing.
- We remove the old mastic and clean the frame and the wall.
- Deep gaps are filled with backing rod to set the depth.
- A flexible, weatherproof sealant is applied in a colour to suit the frame.
- Every joint is checked before we leave.
Before we arrive
- Mention any tricky access
- For business premises, tell us about site rules or sign-in
- Let us know about earlier repairs to the joints
Get a quote
For a quick quote, get us on the phone, or send an email if you’d rather. Tell us about the joints that need doing and we will explain what’s involved and send you a clear quote.
Read more
What window mastic looks like in The Sands
With historic houses such as Farnham Castle (about 2.8 miles west) nearby, there’s older building stock in the area around The Sands as well as newer homes. Where a home is older, older frames set in brick or stone need a sealant that suits them, and sometimes that is traditional sand mastic. Compared with the north and west, the South East gets less rain, but outside sealant still needs a dry, clean surface, so outdoor work is planned around the forecast.
For site and facilities teams at buildings such as South Farnham School, larger buildings have plenty of frames, and the mastic around each one ages. In the older streets around The Church of the Good Shepherd, replacement windows fitted into old openings often leave uneven gaps that need backing and a flexible joint. Letting a property close to Farnham station? Then cracked frame mastic tends to show up as a draught or damp complaint, so it’s worth checking between lets.
The Sands is about 2 miles east of Farnham, in Surrey. Our applicators cover window mastic for homes and businesses in The Sands and the surrounding area. The Sands is one of 395 places in Surrey we cover. For nearby work, see our Reading page (19 miles or so).
Our applicators cover all of the GU10 postcode area for window mastic. If you need window mastic at a property on The Green, Binton Lane and Botany Hill or a nearby road, our applicators can take on the job. Nearby, we also carry out window mastic in Runfold (1 mile west), Sandy Cross (1 mile north), Compton (1 mile west), Seale (1 mile north-east) and Tongham (2 miles north). Larger places within reach include Guildford (8 miles east), Woking (10 miles north-east), Camberley (9 miles north), Frimley (7 miles north), Haslemere (9 miles south) and Cranleigh (12 miles south-east).
Around The Sands
We work in homes and buildings around Crooksbury Hill, among other places. For rail, the closest station is Farnham station, roughly 2.3 miles west. Other landmarks nearby include Milford Hospital (5.7 miles south-east) and Farnham Castle (2.8 miles west). For a walk, there’s Culverswell Hill and Runfold Wood.
Different surfaces, different methods
Composite doors
Composite doors are normally hung in an uPVC-type frame, so its perimeter joint is sealed much like a window. We match the colour to the frame.
Timber windows & doors
Wood swells when it’s wet and shrinks when it dries, so a flexible sealant is essential. The paint or stain needs to be sound where the sealant meets it.
Landlords, agents and businesses in The Sands
If you manage several properties in or around The Sands, jobs at different addresses can go on one quote. Send us the addresses and the work at each, and photos by email help.
A neglected joint can let water reach the structure, which matters even more when someone else lives there. Keeping joints in good order is simple maintenance.