Surrey · England
Sand mastic for sash & case windows in Rowly, Surrey
We cover Rowly for traditional burnt sand mastic around sash and case windows and doors in stone and brick. Old material cut out, joints cleaned and sealed neatly and a 12-month guarantee.
- Tired mastic found when preparing windows for paint
- Failed mastic on an exposed elevation
- Cracked mastic round a front door frame
Leave it or put it right?
Silicone might seem the quicker option, but on period stone or brick it often looks out of place. Sand mastic suits the building and blends with the stone or brick. In a small place like Rowly, homes can be exposed to wind and rain, which finds any gap, and damp in older walls is slow to dry out.
Homes and businesses are quoted the same way: the amount of work, the access and the products needed. Call for a quick quote and we’ll go through it with you.
What you get with us
- Trusted Arbo and Everbuild sealants
- Experience in homes, commercial sites and hotels
- One-year guarantee on every job
- We leave the area clean and tidy
Take a look at our cost guide and what customers say.
About our sand mastic in Rowly
Across Rowly, we renew sand mastic around sash and case windows. Every joint is cleaned out and filled by hand, finished to suit the masonry. We work on timber door frames, period & listed homes and tenement windows, and people most often call us about tired mastic found when preparing windows for paint and weathered mastic on the most exposed windows.
Somewhere as small as Rowly, older homes often have timber frames set in stone or brickwork. Not every older frame suits a modern silicone bead, so the sealant has to be chosen to suit the building.
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.
- Location
- Rowly (GU6, GU5)
- Wider area
- Surrey
- Guarantee
- A year, on every job
- Price
- Quoted before any work starts
- Telephone
- 0345 464 0079
- Page updated
- 26 October 2026
Frames and glazing around Rowly
Historic houses like Chilworth Manor (about 4.3 miles north) are a reminder that the area around Rowly 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. 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.
Chilworth Manor, about 4.3 miles north, is one of the historic houses in the wider area around Rowly, and older homes nearby need a sealant that suits their walls. For landlords with property near Chilworth station, older sash windows in a rental need their mastic kept sound to keep the weather out.
Rowly is about 7 miles south-east of Guildford, in Surrey. If you need sand mastic in Rowly, please ring 0345 464 0079 or email us for a quick quote. We’re based in Crawley and cover Surrey, Rowly included. Rowly is one of 395 places in Surrey we cover. You can also see our page for Crawley, roughly 14 miles from Rowly.
All of GU6 and GU5 is covered for sand mastic. You will find streets such as Guildford Road, Strathavon Close and Smithwood Avenue, and we cover them all. We also cover the places around Rowly: Stroud Common (1 mile north), Elmbridge Village (1 mile south), Grafham (2 miles west), Shamley Green (2 miles north-west) and Birtley Green (2 miles north-west). Within a short drive, we also cover Guildford (7 miles north-west), Woking (11 miles north), Camberley (15 miles north-west), Horley (15 miles east), Farnham (13 miles west) and Reigate (14 miles east).
Near you in Rowly
Locally, jobs take us to homes and businesses close to Cucknell's Wood. For rail, the closest station is Chilworth station, about 3.9 miles north of the centre. A little further out are Milford Hospital (5.2 miles west). The countryside around Rowly includes Lower Lake and St Martha's Hill and Colyer's Hanger.
When to call us in Rowly
Timber swells and shrinks with the weather. The movement cracks the mastic over time.
Look out for these signs:
- A silicone bead on a sash window that spoils the look
- Patchy fillers round a sash window
- Tired mastic found when preparing windows for paint
- Failed mastic on an exposed elevation
If you look after a building such as Glebelands School, larger buildings have plenty of frames, and the mastic around each one ages.
What to look for in a quote
- How long to leave it before use
- What product goes in the joint
- The length of the guarantee
- Whether they’re fully insured
How the job changes by surface
Brick reveals
An open joint at a brick reveal lets weather in. Renewing the mastic closes it.
Stone surrounds
Sand mastic sits naturally against stone. The finish blends with the masonry.
Questions from Rowly
Can you do sand mastic in Rowly?
Yes, Rowly 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 cover smaller places like Rowly?
Yes, we do. We work across London and the South East, from towns to the smallest places. Longer journeys are simply planned in advance.
Are you insured?
Yes, we’re fully insured.
Which is right for my windows, sand mastic or modern sealant?
We will help you decide. Sand mastic suits many period homes, and modern sealants suit newer frames.
Can I do it myself?
You can, for simple jobs. Preparation is everything: all the old sealant out, and a clean, dry joint. If it does not work out, we can redo it.
Can sand mastic be painted?
Traditional guidance is not to paint over sand mastic. Ask us before you decorate around it and we’ll talk you through it.
Is it OK to seal over old sealant?
No, and we never do. It can look neat for a few weeks, but the new bead soon lifts. Removing the old sealant completely is the only lasting way.
Do I need permission for sand mastic on a listed building?
Checking first is sensible. Ask your local planning authority whether consent is needed for listed or conservation-area properties.
Should I try it myself first?
If you do try it yourself, take your time over the 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.
Sealing over old silicone is the commonest DIY error. New silicone won’t bond to old, so it lifts and traps water and mould underneath. All the old material has to come out first.
How it works
We work through the job in order: protect, prepare, seal, tidy. Typically it takes a few hours per window, depending on the condition of the joints. Somewhere like Rowly needs a little journey planning: let us know about lanes, gates and parking. We bring what the job needs, so it can be finished in one trip where possible.
- First we agree which joints need doing.
- Old mastic and any loose material are raked out.
- Deep gaps are packed so the mastic sits at the right depth.
- The sand mastic is mixed and pressed into the joint by hand.
- We dress the finish so it sits neatly against the masonry.
Getting ready for the visit
- Move anything stored near the joints
- Tell us if parking is tricky
- Tell us about any previous sealing or DIY attempts
Ask for a quote
For a quote, call 0345 464 0079 or drop us an email with the location and a short description of the problem. You will have a clear quote before we start.
Related advice
Towns and villages near Rowly
Other services in Rowly
Looking after it afterwards
A little care helps the new joints last. Our advice:
- Clear gutters so water does not pour onto the windows
- Avoid heavy scraping on the mastic joint
- Plan mastic work ahead of painting
- Inspect the joints round the windows every year or so
When preparing windows for paint, take care around the mastic. It can be damaged by heavy scraping.
It’s best to renew mastic before painting the windows. Painting over failed mastic hides the problem for a while.
Landlord and commercial work in Rowly
In hotels, rooms out of use cost money, so we plan the work room by room around your bookings where we can. Hotel work is part of what we do, alongside homes and businesses.
Letting agents and landlords in Rowly can book us as well as homeowners. Resealing between tenancies is a simple way to keep a property in good order before the next move-in.