Surrey · England
Sand Mastic in Hammer Bottom
Specialist sand mastic for Hammer Bottom: the right sealant, proper preparation and a neat finish. Call for a quick quote.
- Crumbling sand mastic round a window
- Old cement repairs round a window that have failed
- Open joints round the window box
Sand mastic in Hammer Bottom: local notes
Rainfall in the South East is lower than in much of the UK, yet outdoor joints still have to be sealed dry, so jobs are booked with the weather in mind.
Managing a site like Woolmer Hill School? Then larger buildings have plenty of frames, and the mastic around each one ages. If you live in an older home near The Parish Church of St Peter, replacement windows fitted into old openings often leave uneven gaps that need backing and a flexible joint. Rented homes near Haslemere station change hands often, and cracked sand mastic around sash windows lets in the draughts tenants complain about.
Hammer Bottom is about 9 miles south of Farnham, in Surrey. Whether you are in the middle of Hammer Bottom or further out, we cover sand mastic for every kind of property, from flats and houses to offices and hotels. Hammer Bottom is one of 395 towns and villages in Surrey we cover. For nearby work, see our Portsmouth page.
Every address in GU27 and GU30 is covered for sand mastic, from the main roads to the quietest streets. You will find streets such as Hammer Vale, Sandy Lane and Hewshott Lane. Neighbouring places we cover for sand mastic include Hammer (1 mile east), Woolmer Hill (1 mile south-east), Bramshott Chase (1 mile north), Linchmere (1 mile south) and Shottermill (1 mile east). Further out, we also cover Guildford (14 miles north-east), Farnham (9 miles north), Cranleigh (13 miles east), Ash (11 miles north), Godalming (9 miles north-east) and Farncombe (10 miles north-east).
Near you in Hammer Bottom
We work in homes and buildings around The Prince of Wales pub and Camelsdale Primary School, among other places. Hammer Bottom’s nearest station is Haslemere station, about 1.9 miles east. Other landmarks nearby include Haslemere and District Hospital (2.4 miles east). The countryside around Hammer Bottom includes Wheeler's Down and Lynchmere Commons.
About our sand mastic in Hammer Bottom
Traditional burnt sand mastic blends with stone and brick surrounds. It suits period and listed homes where a modern sealant bead would stand out. Typical jobs include mastic worn away on windows facing the weather and mastic that needs renewing before redecorating, on tenement windows, timber door frames and period & listed homes.
Outdoor sealant needs dry, clean surfaces, so work on frames around Hammer Bottom is planned for dry weather. Let us know about access to all the frames, upstairs ones included.
Whatever the size of the job, you get the same one-year guarantee in Hammer Bottom and across Surrey.
- Where
- Hammer Bottom (GU27, GU30)
- Wider area
- Surrey
- Cover
- 12 months on all our work
- Price
- A clear quote up front
- Telephone
- 0345 464 0079
- Page updated
- 26 October 2026
Looking after it afterwards
To keep the joints looking good and working properly:
- Ask us before painting near the mastic
- Go gently near the mastic when preparing windows
- Sort the mastic before the decorators arrive
- Get any rot dealt with first
Avoid painting over the new mastic, which is the traditional advice. Ask us before any decorating around it.
It’s best to renew mastic before painting the windows. Painting over failed mastic hides the problem for a while.
Can I do it myself?
Some jobs are best left to a professional: work at height, external movement joints, fire-rated sealant and large areas need the right product, the right access and the right method.
A careful DIYer can reseal a simple joint, like a short, easy-to-reach joint indoors. Where it goes wrong is sealing over the old bead, working on a wet joint or overloading the gap.
Why deal with it now?
Before painting the windows, it pays to renew the mastic. Painting over failed mastic does not seal it, and the new mastic is traditionally left unpainted. Around Hammer Bottom, older homes often have timber in their floors and frames, and water through a failed joint can rot timber if it’s left.
Rather than a set price list, we look at what your job involves: how many joints, what’s in them now and how we reach them. You will know the price before we begin.
Why Hammer Bottom customers choose us
- Quality sealants from Arbo and Everbuild
- Rated 4.9 stars on Google
- More than 20 years in sealant work
- Approved under the ARBOMaster scheme
Nearby places to Hammer Bottom
Also in Hammer Bottom
Hammer Bottom questions
Can you help a landlord with a rental near Haslemere station?
Yes, rental work is part of what we do. Just call 0345 464 0079 or send us an email and tell us about the property, and we’ll send you a clear quote.
Is Hammer Bottom in your area for sand mastic?
Yes. We work across London and the South East, and Hammer Bottom is part of that. You can phone 0345 464 0079 or send us an email and let us know what needs doing, and we’ll give you a clear price.
Do you hold any approvals?
Yes. We’re an ARBOMaster approved applicator.
Will you leave a mess?
No. The area is protected while we work and cleaned up afterwards.
What should I tell you?
Where the job is, what the problem is and roughly how big it is. Photos by email help too.
Should I try DIY first?
It depends on the job. Work at height, movement joints, fire-rated gaps and large areas are best left to a professional.
Where is Mr Mastic based?
We work from Crawley. We cover Hammer Bottom and the rest of Surrey.
What guarantee comes with the work?
There’s a 12-month guarantee on every job.
Work for landlords, hotels and businesses
We also work for businesses, from offices to washrooms and kitchens. For commercial premises, we can talk through working times when we quote.
Whether it’s one flat or a portfolio, you get the same standard of work: the old material taken out, careful preparation and a 12-month guarantee.
How the visit works
There’s no need to move everything out, just the space around the work. Everything nearby is protected, and the work takes a few hours for a single window, longer for several in most cases. In a small place like Hammer Bottom, access is normally the main thing to plan. For outside work, also let us know about exposed walls and any outbuildings involved.
- We check the window surrounds and agree which joints need renewing.
- Old, loose mastic is raked out and the joint cleaned.
- Large voids are packed out first, so the mastic isn’t too thick.
- The mastic is mixed, pressed into the joint by hand and shaped.
- The mastic is finished to sit tidily against the stone or brick.
How to prepare
- Mention any parking rules near the property
- Keep children and pets away from the work area
- Mention any leaks or damp you’ve noticed
How to get a quote
Getting a quote is simple: let us know the job and the location. Photos by email help us understand the job, and we will come back to you with a quote.
Read more
Different surfaces, different methods
Stone surrounds
Sand mastic sits naturally against stone. It finishes to look like part of the surround.
Tenement and terrace windows
Tenements and terraces often have many sash windows with ageing mastic. We can do one window or several.
When it isn’t the sealant
It helps to know what we cannot do too:
- Damaged stone surrounds
- Cracked or broken glass
- Sash cords, weights and draught-proofing of the sashes
Not sure which it is? You can call 0345 464 0079 or send us an email and we’ll tell you honestly before booking.
Surfaces we seal
- Period & listed homes
- Tenement windows
- Stone surrounds
- Sash and case windows
- Timber door frames
- Brick reveals