Isle of Wight · England
Sand mastic for sash & case windows in Brook, Isle of Wight
Traditional burnt sand mastic around sash and case windows and doors in stone and brick in Brook, with a 12-month guarantee on every job. Call for a quick quote.
- Failed mastic on an exposed elevation
- Patchy fillers round a sash window
- Gaps between timber frames and stone or brick
How to look after the new joints
So the new joints stay in good condition:
- Renew mastic before redecorating the windows
- Keep modern sealant off the mastic
- Don’t paint over the new mastic
- Ask the planning authority about consent for listed or conservation-area homes
When preparing windows for paint, take care around the mastic. It can be damaged by heavy scraping.
Good mastic helps keep the frame dry. Failed mastic lets water reach the timber and timber that stays wet can rot.
How we handle sand mastic in Brook
If your home is listed or in a conservation area, check with your local planning authority whether consent is needed for work to windows. Sand mastic is often favoured as a like-for-like material. If you are dealing with crumbling sand mastic round a window and mastic round period door frames that has failed, we can put it right, whatever the surface.
Outdoor sealant needs dry, clean surfaces, so work on frames around Brook is planned for dry weather. Let us know about access to all the frames, upstairs ones included.
We guarantee the work for a year. If something isn’t right with it in that time, tell us and we will put it right.
- Where
- Brook (PO30)
- Region
- Isle of Wight
- Cover
- One year on every job
- Quotes
- Quoted before any work starts
- Telephone
- 0345 464 0079
- Page updated
- 26 October 2026
Brook: your questions answered
Is Brook 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.
Can you do sand mastic in Brook?
Yes. Our work covers London and the South East, and Brook is part of that. Just phone 0345 464 0079 or drop us an email with a few details of the job.
Do you hold any approvals?
Yes. Mr Mastic is an ARBOMaster approved applicator.
Do I need to be at home?
That depends on where the joints are. Inside work needs someone to give us access, while outside work can sometimes be arranged differently.
Will there be a smell?
It depends on the product. Some smell for a while, some hardly at all.
What should I tell you?
Only a few details: the address or postcode, what’s wrong and any access issues. After that, simply phone 0345 464 0079 or drop us an email.
Where is Mr Mastic based?
Our base is Crawley. We work across South East England, London and Scotland.
Is consent needed for window work on a listed home?
It’s best to ask your local planning authority first. Sand mastic is often favoured as like for like, but they decide.
Surface by surface
Brick reveals
We rake out the old mastic and pack deep voids before the new mastic goes in.
Sash and case windows
Most of our sand mastic work is on sash windows. Each joint round the box is raked out and renewed.
Nearby places to Brook
Also in Brook
How it works
We work through the job in order: protection first, then preparation, sealing and a tidy-up. Typically it takes a few hours for a single window, longer for several and we leave things clean and tidy. Somewhere like Brook needs a little journey planning: tell us about narrow lanes, gates, long drives and where we can park. We bring what the job needs, so it can be finished in one trip where possible.
- 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.
- The surface is finished to suit the stone or brick.
Getting ready for the visit
- Let us know about stairs, lifts or work at height
- Let us know about parking restrictions
- Let us know if you’ve seen damp or leaks
Ask for a quote
To get a quote, phone 0345 464 0079 or send us an email and tell us where the job is and what the problem looks like. We’ll send you a clear quote before any work starts.
Read more
DIY sealant or a professional job?
If you are set on DIY, put the effort into preparation: take out all the old sealant, make sure the joint is clean and dry, and give it the full cure time. If it fails, we can still redo it.
The difference is mostly in the preparation and the product. We take joints back to clean, dry surfaces, and the sealant is chosen for how the joint moves and where it is, and the work is guaranteed for a year.
For landlords and businesses
We work for landlords and agents as well as householders. Resealing between tenancies is a simple way to keep a property in good order.
Housing providers, facilities teams and property managers book us too in Brook and across the Isle of Wight. We can quote a run of properties together, and we are fully insured.
Why it’s worth doing now in Brook
Gaps round a sash window let in rain and draughts. Left, water can reach the timber and the wall so renewing it early protects the window. In a small place like Brook, homes can be exposed to wind and rain, which finds any gap, and damp in older walls is slow to dry out.
Instead of a standard rate, we price the job in front of us: how many joints, what’s in them now and how we reach them. You will know the price before we begin.
Why book with us
- Tidy, careful work
- Anti-fungal silicone where joints get wet
- Every job guaranteed for a year
- Approved under the ARBOMaster scheme
Common problems we fix in Brook
Timber swells and shrinks with the weather. That movement opens up the mastic joint little by little.
Common reasons people contact us include:
- Mastic dropping out of the joint
- A silicone bead on a sash window that spoils the look
- Cement or filler used on old window joints that has cracked
- Gaps where the frame meets the masonry
In and around Brook, as anywhere, good sand mastic starts with a clean, dry, properly prepared joint.
Before you book anyone
- How the colour is chosen
- Who does the work, and how experienced they are
- Are they insured?
- What guarantee comes with the work
Sand mastic in Brook: local notes
Brook is within about 1 mile of the coast, and homes near the sea take more wind-driven rain, with salt in the air closer to the shore. Both are hard on the mastic around older windows and doors, which can dry out and crack sooner where a building faces 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.
In the older streets around St. Mary's Church, the joint between an old wall and a newer frame is generally the first place rain gets in.
Brook is about 7 miles south-west of Newport, in the Isle of Wight. Homes, rented property, offices and hotels in Brook can book us for sand mastic. The work is guaranteed for a year. Across the Isle of Wight, we cover 125 places, Brook among them. Our Southampton page covers work nearby (19 miles or so).
All of PO30 is covered for sand mastic, from the main roads to the quietest streets. Streets in the area include Carpenters Lane and Coastguard Lane, all of which we cover. Other places close to Brook include Dunsbury (1 mile north), Brookgreen (1 mile south-east), Hulverstone (1 mile east), Shalcombe (1 mile north-east) and Chilton Green (2 miles south-east). We also work in nearby towns such as Newport (7 miles north-east), Ryde (14 miles east), Cowes (10 miles north-east), Sandown (13 miles east), Shanklin (12 miles east) and Ventnor (11 miles east). Remote and island addresses need a little more planning, so please mention your location when you ring 0345 464 0079 or drop us an email.
Near you in Brook
Well-known places in the area include Calbourne Water Mill And Rural Museum (2.5 miles north-east) and Yarmouth Castle (4.3 miles north-west). Not far away are Westover Down.