Hampshire · England
Headley Down New Build Mastic
Plot mastic for developers and snagging failed sealant in new homes in Headley Down, with a 12-month guarantee on every job. Call for a quick quote.
- Shower seals failing in the first year or two
- Gaps between new skirting and floors
- Internal frame sealant that has split
New build mastic for homes and businesses in Headley Down
Building dust is behind a lot of failed new-build sealant. Each joint is cleaned of dust and primed where the product calls for it, so the new bead bonds properly instead of bonding to the dust. We are often asked to deal with gaps opening as the house dries out and settles and sealant applied over dusty or wet surfaces, across bathrooms & en suites, kitchens and windows & doors.
If you’ve bought a new home in or near Headley Down, the first year or two is a good time to check the sealant. Gaps at skirtings, shower seals pulling away and missing mastic around frames are common snags.
We stand behind the work with a one-year guarantee, so you are not left on your own once the job is done.
- Location
- Headley Down (GU35)
- Region
- Hampshire
- Guarantee
- 12 months on all our work
- Quote
- A clear quote up front
- Call
- 0345 464 0079
- Last updated
- 26 October 2026
What we’re called out for in Headley Down
A new house holds a lot of water from the build, and it dries out over the first couple of years. Drying timber shrinks and pulls joints apart.
If you can see any of these, it’s time to have the joints looked at:
- Gaps between new skirting and floors
- Internal frame sealant that has split
- Smeared, uneven beads picked up at snagging
- Beads laid onto grit and dust from the build
In and around Headley Down, as anywhere, good new build mastic starts with a clean, dry, properly prepared joint.
Before booking anyone
- Whether you can choose the colour
- Whether VAT is included
- Whether all the old sealant comes out first
- Which sealant they’ll use, and why
FAQs for Headley Down
Is Headley Down within the area you cover?
Yes, we do. Our work covers London and the South East, and smaller places are part of that. Longer journeys are simply planned in advance.
Do you cover Headley Down for new build mastic?
Yes. Our work covers London and the South East, and Headley Down 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 send you a clear quote.
Can you do plot mastic on a new development?
Yes. We carry out plot mastic and second-fix sealing for builders and developers. Send us the plot schedule and we will quote.
How much does new build mastic cost in Headley Down?
There’s no set price, as it depends on the job: how much there is, what’s there now, how we reach it and what it needs. You will get a clear quote before any work starts.
Do you work for landlords and businesses?
Yes. As well as householders, we work for landlords, agents, businesses and hotels across Hampshire.
Can I add another job to the visit?
Yes. Several rooms, windows or areas can go on one quote.
Does someone need to be in?
For indoor joints, yes, someone needs to let us in. After that, you can carry on with your day.
Do you work for hotels and businesses?
Yes. We work in offices, washrooms, hotels and other commercial premises, as well as homes. We can talk about working times when we quote.
More services for Headley Down
DIY versus a professional finish
Sealing over old silicone is the commonest DIY error. Silicone does not stick to old silicone, so it peels away and traps moisture behind it. Everything old must be removed first.
What a professional job adds is preparation and the right product. Joints are cleaned back to sound surfaces and dried, and the sealant is matched to the joint and its conditions.
New build mastic around Headley Down
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.
For new homes near Liphook station, it’s worth checking the sealant early, while snags are still fresh.
Headley Down is about 6 miles south of Farnham, in Hampshire. For new build mastic in and around Headley Down, please call 0345 464 0079 or send us an email for a quick quote. We cover Hampshire from our Crawley base. Our area takes in 683 places across Hampshire, large and small. For nearby work, see our Reading page (24 miles or so).
Jobs for new build mastic in GU35 works the same way as everywhere else we cover. Streets in the area include Wilsons Road, Ludshott Grove and Fairview Road, all of which we cover. You’ll find Headley Down on the B3002, which makes it straightforward to reach. If you’re just outside Headley Down, we cover Arford (1 mile west), Headley (1 mile west), Wishanger Common (2 miles north), Standford (2 miles south-west) and Lindford (2 miles west). Further out, we also cover Farnborough (12 miles north), Fleet (11 miles north), Aldershot (9 miles north), Alton (8 miles west), Petersfield (10 miles south-west) and Yateley (15 miles north).
Around Headley Down
Around Headley Down, our work takes us to homes and buildings near Mill Chase Academy, among other places. For rail, the closest station is Liphook station, about 3.4 miles south of the centre. Nearby you’ll also find Chase Community Hospital (2.8 miles west). Open spaces near Headley Down include Gibbet Hill and Deadwater Valley.
How the visit works
All our tools and materials come with us in the van, so you do not need to buy or prepare anything. After a quick look at the joints together, we protect the area and start. Most jobs take a few hours in a single home. In a smaller place like Headley Down, parking is seldom the issue; lanes, gates and long drives are worth mentioning. If the job is outside, tell us about side access and how high the joints are.
- First we work through your snagging list or plot schedule with you.
- Failed or untidy sealant is cut out completely.
- We clean off dust from the build and prime the surfaces where the product needs it.
- We apply a sealant that suits each joint and tool it to a neat finish.
- Finally, each room is checked and you are given the cure time.
Preparing for the visit
- Let us know if you’ve seen damp or leaks
- Keep children and pets away from the work area
- Let us know about stairs, lifts or work at height
How to get a quote
For new build mastic in Headley Down, call 0345 464 0079 or drop us an email. Tell us what the problem is and where, and you will get a clear quote before any work starts.
Advice
Landlord and commercial work in Headley Down
For anyone letting property in or around Headley Down, jobs at different addresses can go on one quote. Send us the addresses and the work at each, and pictures by email help.
Mouldy or split sealant often shows up at the end of a tenancy. We can quote for more than one property at once.
What happens if it’s left?
Running a new bead over the builder’s sealant might look tidy for a few weeks, but it will not bond to the old layer. Taking it all out and starting again is the only way to get a lasting seal. In a smaller place like Headley Down, wherever a wall is exposed, a failed outside joint is a real source of damp. Inside, a split seal lets water into floors and panels just as it would anywhere.
Homes and businesses are quoted the same way: the amount of work, how we reach it and what it needs, plus any working-time requirements on site. Ask us for a quote and we’ll go through it with you.
Why choose Mr Mastic in Headley Down
- We agree the colour with you first
- 4.9 on Google from 180+ five-star reviews
- Any old sealant cut out fully, not covered over
- Colour picked to suit the job
Take a look at our cost guide or customer reviews.
How to look after the new joints
Simple care keeps the joints in good condition. Our advice:
- Act quickly if a seal starts to leak
- Resist patching a failed seal with a tube from the DIY shop
- Check bath and shower seals every few months as the house settles
- Keep water off fresh sealant until it has cured
Keep the bathroom ventilated, especially in the first year. Use the extractor fan or open a window after showers to help keep mould away.
The sooner you deal with untidy or cracking sealant, the less there is to put right. Small faults turn into leaks if left.
What affects the cost of new build mastic
Your quote is based on your job. We take into account:
- The type of sealant required
- The number and length of the joints
- Access and height
- The number of rooms or windows
A few things move the cost up or down: the old material and how easily it comes out, whether mould needs treating, and whether we need extra access for height. Your quote takes all of that into account.
What we need to know
What to tell us when you ask for a quote:
- Any access issues, like height or stairs
- Where the property is
- Pictures of the joints, sent by email
- The rough size of the job
For a quote, phone 0345 464 0079 or send us an email with the location and a short description of the problem. We’ll send you a clear quote before any work starts.