Hampshire · England
Window Mastic in Sheet
Specialist window mastic for Sheet: careful preparation, the right product and tidy work. Call for a quick quote.
- Draughty joints inside around the window
- Gaps left after new windows were fitted
- Gaps where the sill meets the wall
About our window mastic in Sheet
Frames and walls do not move together. Heat and cold make frames grow and shrink against brick or render that hardly moves. So the sealant has to stretch and recover, which is why we use a low-modulus product. If you are dealing with hard, cracked sealant around windows and cracked sealant at the sill ends, we can put it right, whatever the surface.
Somewhere as small as Sheet, older homes often have timber frames set in stone or brickwork. Older buildings like these don’t always suit modern silicone, so the sealant has to be chosen to suit the building.
Your job is guaranteed for a year, as with all our work.
- Place
- Sheet (GU32, GU31)
- Region
- Hampshire
- Cover
- One year on every job
- Quotes
- Quoted before any work starts
- Telephone
- 0345 464 0079
- Updated
- 26 October 2026
Aftercare tips
Once the sealant has cured, a few habits help it last:
- Wash the frames with mild soapy water
- Check the mastic once a year
- Keep timber frames painted
- Ventilate rooms so frames do not stay wet inside
Silicone can’t normally be painted, so mention any painting plans before work begins. There are paintable sealants for joints that need it.
Water trapped behind a failed joint can start rot in timber frames and sills. Rotten timber needs a joiner, not a sealant, so early resealing is worth it.
What sealant work can’t fix
We’d rather tell you now than do work that will not last, so here’s what sealant can’t put right:
- Broken hinges, locks or handles
- Draughts through the window seals rather than the frame
- Rotten timber, which needs a joiner first
If you’re not sure, just ring 0345 464 0079 or email us and we’ll give you a straight answer before booking.
What we seal
- uPVC windows
- Window sills
- Aluminium frames
- Patio & French doors
- Composite doors
- Timber windows & doors
Quotes for window mastic in Sheet
You’ll get a clear quote before work begins. It’s based on:
- Working hours on commercial sites
- Whether old sealant or filler has to be cut out
- How many rooms, windows or areas are involved
- Whether there’s mould to deal with
What it costs depends on the size of the job, how hard the old material is to remove and how easy the joints are to reach. We give a clear quote before work begins, so you know where you stand.
Helping us quote
A few details help us give you an accurate quote. When you ask for a quote, tell us:
- The rough size of the job
- Whether it’s a home or a business
- What the problem is, such as mould, gaps, leaks or cracking
- Whether it has been sealed before
Asking for a quote is easy: let us know the job and the location. A few photos by email make the job easier to understand, and we’ll take it from there.
Do you need window mastic in Sheet?
Sun, frost and rain wear sealant out. Sunlight dries the surface out, until it loses its stretch and starts to crack.
Most people get in touch after spotting something like this:
- Old mastic that has gone black or come away
- Cold air getting in at the frame edge
- Cracked sealant at the sill ends
- Untidy mastic left by window fitters
If you let a flat or house near Petersfield station, sound mastic around windows and doors keeps out the draughts and damp that tenants notice first.
What to look for in a quote
- How long to leave it before use
- Whether all the old sealant comes out first
- The length of the guarantee
- How the surfaces are prepared before sealing
Your questions about window mastic in Sheet
Do you cover Sheet for window mastic?
Yes, Sheet is within the area we cover. Our work covers London and the South East. You can call 0345 464 0079 or send us an email and tell us what needs doing.
Do you work for landlords with property near Petersfield station?
Yes, we work for letting agents and landlords. Just call 0345 464 0079 or email us and tell us about the property, and we’ll give you a clear price.
Which products do you use?
Quality sealants from brands including Arbo and Everbuild, picked for each joint. We explain the product when we quote.
Where do you work from?
We’re based in Crawley, West Sussex, and we work across South East England, London and Scotland.
Can you get sealant to suit coloured frames?
Yes, we choose a colour to suit the frame. Anthracite grey, black, brown and white cover most frames, with clear as an option.
Should I try DIY first?
Some simple jobs can be done by a careful DIYer. Most DIY failures come from sealing over old material, wet joints or too much sealant.
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 will tell you.
Will there be a smell?
There can be a smell while the sealant cures. Opening a window helps.
Nearby places to Sheet
What else we do in Sheet
Surface by surface
Aluminium frames
Aluminium moves with heat, and the frames are often slimmer than uPVC. A neat, narrow bead in a colour to match keeps the clean look.
uPVC windows
The frame is cleaned with a product that won’t harm the plastic, then the new bead is laid against the frame and the wall.
Frames and glazing around Sheet
Historic houses like Uppark (about 4.5 miles south) are a reminder that the area around Sheet 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. The South East is one of the drier parts of the UK, though outdoor sealant still has to go onto a dry joint, so the forecast decides the day.
Schools such as Sheet Primary School are buildings too, and the mastic around its windows and doors needs looking after like any other building’s. In the older streets around Church of St Mary Magdalene, replacement windows fitted into old openings often leave uneven gaps that need backing and a flexible joint.
Sheet is about 1 mile north-east of Petersfield, in Hampshire. Whether you are in the middle of Sheet or further out, we cover window mastic for every kind of property. Across Hampshire, we cover 683 places, and Sheet is one of them. Portsmouth is on our list too, about 16 miles from Sheet.
Work in GU32 and GU31 works the same way as everywhere else we cover. We cover properties on Mill Lane, Village Street and Farnham Road. We also cover Petersfield (1 mile south-west), Steep (1 mile north-west), Steep Marsh (1 mile north-west), Stroud (2 miles west) and Oakshott (2 miles north-west). We also work in nearby towns such as Havant (11 miles south), Horndean (8 miles south-west), Alton (10 miles north), Waterlooville (10 miles south-west), Purbrook (11 miles south-west) and Bordon (7 miles north).
Near you in Sheet
In Sheet, that means homes and buildings near The Queens Head pub, Churcher's College and The Petersfield School, among other places. The nearest railway station is Petersfield station, roughly 1.1 miles south-west of the centre. Other landmarks nearby include Petersfield Community Hospital (1.3 miles south-west) and Bear Museum (1.1 miles south-west). Green spaces nearby include Liss Riverside Railway Walk South and Wheatham Hill.
How it works
There is not much for you to do on the day. Show us the job and we’ll take it from there. The job generally takes anything from an hour or two to a full day, depending on how many frames there are from start to finish. For a village or hamlet like Sheet, the journey is planned in advance: let us know about lanes, gates and parking. Everything for the job comes with us, so a second trip is avoided where possible.
- We start by checking each window and door with you.
- The old mastic is cut out and the surfaces cleaned back.
- We fit backing rod in deep gaps so the sealant is the right depth.
- New exterior sealant goes on in a matching colour and is tooled smooth.
- Finally we tidy up and check each joint.
Before we arrive
- Let us know about parking restrictions
- For business premises, tell us about site rules or sign-in
- Mention any leaks or damp you’ve noticed
Get a quote
Every job is quoted individually, so start by telling us what you need. Just phone 0345 464 0079 or email us with the details and send pictures if you have them.
Read more
DIY versus a professional finish
Not every job suits DIY: high-level joints, fire-rated gaps, external movement joints and big jobs call for the right materials, safe access and experience.
A DIY attempt does not rule out a professional job. We cut it out and start again, so tell us about it when you ask for a quote.