West Sussex · England
New-build mastic & snagging in Whitehall, West Sussex
Plot mastic for developers and snagging failed sealant in new homes for Whitehall, backed by a one-year guarantee. Call for a quick quote.
- Cracked caulk along new skirting
- Untidy sealant flagged on a snagging list
- Kitchen sealant that has pulled off the wall
New build mastic in Whitehall, done properly
We carry out plot mastic and second-fix sealing for builders, and snagging reseals for new-home owners. Both get the same care over preparation, because that’s what rushed new-build sealant generally lacks. Common call-outs are for shower seals failing in the first year or two and smeared, uneven beads picked up at snagging, on windows & doors, bathrooms & en suites and kitchens.
In a village or hamlet like Whitehall, new homes are more likely to be a barn conversion or a handful of houses than a big estate. Each still needs its sealant and floor joints finished properly.
Whatever the size of the job, you get the same one-year guarantee in Whitehall and across West Sussex.
- Where
- Whitehall (RH13)
- Wider area
- West Sussex
- Guarantee
- 12 months on all our work
- Quote
- Quoted before any work starts
- Call
- 0345 464 0079
- Page updated
- 26 October 2026
What sealant work cannot fix
It helps to know what we can’t do:
- Baths and trays that move too much for sealant to cope with
- Plumbing faults behind the sealant
- Structural cracks in walls or ceilings
If you are not sure, just phone 0345 464 0079 or send us an email and we will give you a straight answer.
Joints and surfaces we work on
- Show homes
- Skirting & floors
- Plot handovers
- Windows & doors
- Bathrooms & en suites
- Kitchens
Common questions in Whitehall
Is Whitehall in your area for new build mastic?
Yes. We work across London and the South East, and Whitehall is part of that. Just phone 0345 464 0079 or email us with a few details of the job, and we’ll give you a clear price.
Do you work for landlords with property near Billingshurst station?
Yes, we work for letting agents and landlords. Just ring 0345 464 0079 or email us and tell us about the property, and we will give you a clear price.
Which products do you use?
Each joint gets the product that suits it. Movement, water and weather all affect the choice, and we’ll tell you what we’re using.
Should I try DIY first?
For a simple, easy-to-reach joint, a careful DIYer can do a reasonable job. The usual mistakes are sealing over old sealant, sealing a damp joint and using too much.
Do I have to be there?
If the work is inside, we need someone to let us in. Once we have agreed the job, you do not need to watch us work.
Where do you work from?
Our base is Crawley. We work across South East England, London and Scotland.
Will you leave a mess?
Tidy work is part of the job. Nearby surfaces are protected, and we clear up when we are done.
Why does sealant fail so quickly in new builds?
There are normally two causes: movement as the house dries and settles, and sealant laid onto dust without primer. A proper reseal deals with both.
Also near Whitehall
Other services in Whitehall
For landlords and businesses
For anyone letting property in or around Whitehall, jobs at different addresses can be quoted together. Send us the addresses and the work at each.
Housing providers, facilities teams and property managers book us too. We can quote a run of properties together.
What affects the cost of new build mastic
The price is agreed before any work begins. It takes into account:
- How much there is to do
- Access and height
- Working hours on commercial sites
- Which sealant suits the joint
Some things make a job bigger or smaller: how much old sealant there is and how stubborn it is, any mould to treat, and whether we need extra access for height. We take all of that into account in your quote.
What to tell us for a quote
The more you tell us, the more accurate the quote. When you ask for a quote, tell us:
- The address or postcode of the job
- Access, such as stairs, a lift or height
- What the problem is, such as mould, gaps, leaks or cracking
- If it’s domestic, commercial or a hotel
We don’t publish a price list. Instead, we send you a clear quote for your job. To get started, ring 0345 464 0079 or email us.
Why deal with it now?
A tube of sealant from the DIY shop won’t fix the cause: grit, unprimed surfaces and old layers underneath. Cutting out, cleaning and priming are what make the difference. Around Whitehall, older homes often have timber in their floors and frames, and water through a failed joint can rot timber if it’s left.
Combining jobs into one visit usually makes better use of the time than several visits, so it’s worth mentioning everything you’d like done. We’ll give you a clear price for the lot.
Why Whitehall clients choose us
- 4.9 on Google from 180+ five-star reviews
- More than 20 years in sealant work
- An ARBOMaster approved applicator
- Fully insured
Read our cost guide and our reviews.
What we are called out for in Whitehall
Fresh sealant can be knocked or cut by trades finishing off. If it’s disturbed before curing, the joint can be left weak, and the problem shows up after you move in.
It’s worth asking for a quote if you see:
- Cracks appearing as a new home settles
- Internal frame sealant that has split
- Skirting joints opening in the first winter
- Messy sealant that spoils new finishes
Around Whitehall, as everywhere, new build mastic is only as good as the preparation behind it.
What your quote should include
- How the surfaces are prepared before sealing
- Which colour the sealant will be
- How long the guarantee is
- When the joint can take water or movement
How the visit works
When we arrive, we start by going over the job with you, so you know exactly what we’re doing. We protect the surfaces around the joints before we start. The work normally takes anything from a few hours to several days, depending on the number of plots. In a small place like Whitehall, access is generally the main thing to plan. If the job is outside, mention outbuildings, exposed walls and how to reach them.
- First, the list of joints is agreed from your snagging sheet or plot schedule.
- The failed sealant is removed completely, with no layer left behind.
- We clean out the dust and grit left from the build.
- Primer goes on where the surface and product need it, then the new sealant.
- Each bead is tooled and the cure times explained.
Getting ready for the visit
- For indoor joints, keep the area dry beforehand if you can
- Let us know about parking restrictions
- Move anything stored near the joints
Get a quote
We quote each job on its own. Simply ring 0345 464 0079 or send us an email and describe the job, and photos are welcome.
Related advice
New build mastic around Whitehall
The South East is one of the drier parts 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 Billingshurst station, it’s worth checking the sealant early, while snags are still fresh.
Whitehall is about 6 miles south-west of Horsham, in West Sussex. We carry out new build mastic for householders, landlords and businesses in Whitehall and the surrounding area, as part of our work across West Sussex. Whitehall is one of 371 places in West Sussex where we work. Our Crawley page covers work nearby, about 12 miles away.
All of RH13 is covered for new build mastic. Other places close to Whitehall include Shipley (1 mile north-east), Broomer's Corner (1 mile west), Dragons Green (1 mile north), Dial Post (2 miles south-east) and West Grinstead (2 miles east). Within a short drive, we also cover Crawley (12 miles north-east), Horsham (6 miles north-east), Worthing (11 miles south), Haywards Heath (12 miles east), Burgess Hill (11 miles east) and Littlehampton (13 miles south-west).
Around Whitehall
For rail, the closest station is Billingshurst station, roughly 3.8 miles north-west of the centre. The countryside around Whitehall includes Knepp Wildland.
DIY sealant or a professional job?
What a professional job adds is preparation and the right product. Joints are cleaned back to sound surfaces and dried, and the sealant is chosen for how the joint moves and where it is, then guaranteed for a year.
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.