Hampshire · England
Sand mastic for sash & case windows in Headley, Hampshire
We cover Headley 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 every job guaranteed for a year.
- Draughts and rain around sash boxes
- Silicone on a period window that looks wrong
- Mastic dropping out of the joint
Sand mastic for homes and businesses in Headley
Fresh sand mastic forms a skin quite soon but full hardening takes longer. Traditionally, sand mastic is left unpainted and we’ll advise if you are redecorating. If you have tired mastic found when preparing windows for paint and cement or filler used on old window joints that has cracked, we can help, on stone surrounds, timber door frames and period & listed homes alike.
Homes in small places like Headley often stand in the open, with little to shelter their windows from wind and rain. Exposed frames and sills lose their mastic sooner than sheltered ones.
Whatever the size of the job, you get the same 12-month guarantee in Headley and across Hampshire.
- Place
- Headley (GU35)
- Region
- Hampshire
- Guarantee
- A year, on every job
- Price
- A clear price before work begins
- Call
- 0345 464 0079
- Updated
- 26 October 2026
What sand mastic looks like in Headley
Rainfall in the South East is lower than in much of the UK, though outdoor sealant still has to go onto a dry joint, so the forecast decides the day.
Schools such as The Holme Church of England Primary School are buildings too, and its window and door frames need their mastic kept sound, just like a home’s. Rented homes near Liphook station change hands often, and any sash windows need sound mastic to keep draughts and rain out.
Headley is about 6 miles south of Farnham, in Hampshire. Homes, rented property, offices and hotels in Headley is covered for sand mastic, old or new, large or small. The work is guaranteed for a year. Headley is one of 683 places in Hampshire we cover for sand mastic. Our Portsmouth page covers work nearby.
We work across GU35 for sand mastic. Whether your property is on High Street, Crabtree Gardens and Pound Close or a nearby road, our applicators can take on the job. Other places close to Headley include Arford (1 mile north-east), Headley Down (1 mile east), Lindford (1 mile west), Standford (1 mile south-west) and Deadwater (1 mile west). We also work in nearby towns such as Farnborough (12 miles north), Fleet (11 miles north), Aldershot (9 miles north), Alton (7 miles west), Petersfield (9 miles south-west) and Yateley (15 miles north).
What’s near Headley
Locally, jobs take us to homes and businesses close to Mill Chase Academy and The Holly Bush Inn. For rail, the closest station is Liphook station, about 3.4 miles south. Well-known places in the area include Chase Community Hospital (1.9 miles south-west). The countryside around Headley includes Deadwater Valley and Wheeler's Down.
Surface by surface
Tenement and terrace windows
Windows above ground floor need the right access. Let us know the floor and we will confirm access.
Period and listed homes
Sand mastic is the like-for-like choice for many period homes. If your home is listed, ask your local planning authority about consent.
Common questions in Headley
Can you do sand mastic in Headley?
Yes, Headley is within the area we cover. Our work covers London and the South East. Just ring 0345 464 0079 or email us with a few details of the job, and we will send you a clear quote.
Do you cover smaller places like Headley?
Yes, Headley is covered. Our work covers London and the South East, and smaller places are part of that. Longer journeys are simply planned in advance.
Do you remove the old sealant?
Yes, every time. New silicone does not stick to old silicone, so any old material comes out before anything new goes in.
How long does the job take?
It depends on the size of the job, but most jobs take a few hours per window, depending on the condition of the joints. We will tell you when we quote.
Do you offer different sealant colours?
Usually, yes. White, clear and grey are common, and other colours are available for many products, and we will agree it with you first.
Is the work guaranteed?
Our one-year guarantee covers every job, sand mastic included.
Do you work for hotels and businesses?
Yes, regularly. We can plan bigger jobs in stages to suit the site.
Do you hold any approvals?
Yes. We are approved under the ARBOMaster scheme, the approved applicator scheme for Arbo sealants.
Why deal with it now?
Not every filler suits an old window surround. Sand mastic matches what was there and that can be important for listed homes. Around Headley, older homes often have timber in their floors and frames, where water from a failed joint can cause rot if it’s left.
Some things make a job bigger or smaller: the old material and how easily it comes out, any mould to treat, and whether we need extra access for height. We take all of that into account in your quote.
Why choose Mr Mastic in Headley
- Homes, businesses and hotels
- Trusted Arbo and Everbuild sealants
- ARBOMaster approved applicator
- Fully insured
Take a look at what affects the cost or our reviews.
What we are called out for in Headley
Paint, silicone or cement used over old mastic causes problems. They do not move with the timber, and they generally need raking out.
The most common problems we see are:
- Mastic dropping out of the joint
- Tired mastic found when preparing windows for paint
- Wind and rain getting in round a sash window
- Patchy fillers round a sash window
For an older house near a landmark such as Church of All Saints, frames set in older brick or stone need a sealant that suits the wall as well as the frame.
Before booking anyone
- Which sealant they’ll use, and why
- How the joint is cleaned and prepared
- The length of the guarantee
- When the joint can take water or movement
How we quote for sand mastic
There’s no set price list. What we look at:
- Mould in or behind the old joints
- How many areas need sealing
- Working hours on commercial sites
- Which sealant suits the joint
Commercial jobs are quoted on the same basis as homes: the amount of work, how we reach it and what it needs. Ask us for a quote and we will go through it with you.
What to tell us for a quote
There’s no need for technical detail. It helps if you can tell us:
- The rough size of the job
- Where the property is
- Access, such as stairs, a lift or height
- Pictures of the joints, sent by email
Need a quote? Please phone 0345 464 0079 or send us an email and tell us about the job. You’ll know what we plan to do, and what it will cost, before any work begins.
How the visit works
A visit follows a simple pattern: we look at the joints together, mask and protect the surrounding surfaces, do the work and tidy away. Most jobs take a few hours per window, depending on the condition of the joints. Somewhere as small as Headley, access is often the only tricky part. If the job is outside, mention outbuildings, exposed walls and how to reach them.
- First, we look at the surrounds with you and agree what needs doing.
- We rake out the old mastic and clean the joint.
- We pack any deep gaps so the mastic sits at the right depth.
- Sand mastic is mixed and applied by hand, then shaped to the joint.
- We dress the surface so it sits neatly against the masonry.
How to prepare
- Let us know about stairs, lifts or work at height
- Mention any leaks or damp you’ve noticed
- Let us know about earlier repairs to the joints
How to get a quote
A good description makes for an accurate quote. Let us know the location, the problem and roughly how many joints.
Advice
When something else is needed
We’ll always be straight with you, so here’s what sealant can’t fix:
- Crumbling stone or brickwork round the window
- Cracked or broken glass
- Timber that has rotted
Not sure which it is? You can ring 0345 464 0079 or drop us an email and we’ll tell you honestly.
Joints and surfaces we work on
- Tenement windows
- Timber door frames
- Period & listed homes
- Stone surrounds
- Sash and case windows
- Brick reveals
DIY sealant or a professional job?
A careful DIYer can reseal a simple joint, such as a straightforward joint indoors. Where it goes wrong is sealing over the old bead, working on a wet joint or overloading the gap.
Overfilling a joint is a classic DIY mistake. A thick, smeared bead looks untidy and does not move well, and the joint depth matters as much as the finish.