West Sussex · England
Colwood New Build Mastic
Plot mastic for developers and snagging failed sealant in new homes for householders, landlords and businesses in Colwood. ARBOMaster approved applicators, fully insured, with a 12-month guarantee.
- Skirting joints opening in the first winter
- Internal frame sealant that has split
- Smeared, uneven beads picked up at snagging
Can I do it myself?
If you do try it yourself, take your time over the preparation: remove every trace of old sealant, clean and dry the joint, and follow the product’s cure time. If it doesn’t work out, we can still put it right.
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, then guaranteed for a year.
New build mastic in Colwood, done properly
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. Common call-outs are for sealant applied over dusty or wet surfaces and plot mastic for developers ahead of handover, on windows & doors, plot handovers and skirting & floors.
Work in a small place like Colwood just needs the journey and access planning, and once on site, the job is the same as anywhere.
You get a one-year guarantee, the same in Colwood as everywhere else we work.
- Location
- Colwood (RH17)
- Wider area
- West Sussex
- Cover
- 12 months on all our work
- Price
- A clear price before any work starts
- Call
- 0345 464 0079
- Page updated
- 26 October 2026
Towns and villages near Colwood
Also in Colwood
When it is not the sealant
New sealant can’t fix everything, and we’d rather say so up front. It won’t solve:
- Settlement cracks that need a surveyor
- Leaks from pipes, valves or wastes, which need a plumber
- Deciding who is responsible under a builder’s warranty
Not sure which it is? You can phone 0345 464 0079 or drop us an email and we will tell you honestly before you book.
Joints and surfaces we work on
- Bathrooms & en suites
- Show homes
- Skirting & floors
- Plot handovers
- Kitchens
- Windows & doors
Work for landlords, hotels and businesses
Housing providers, facilities teams and property managers book us too. Several sites can go on one quote.
In hotels, rooms out of use cost money, so the work can be planned room by room around your bookings where we can. We have worked in hotels as well as homes and businesses.
When to call us in Colwood
Once people move in, baths and trays take weight and bed down. If a bath wasn’t filled when it was sealed, the bead is stretched the first time it’s used and the sealant may split.
If you can see any of these, it’s time to have the joints looked at:
- Leaking shower tray seals in a new home
- Cracked caulk along new skirting
- Cracked sealant around new window and door frames
- Smeared, uneven beads picked up at snagging
For jobs in and around Colwood, choosing the right material for each joint is as important as a tidy finish.
Before booking anyone
- Whether they’re fully insured
- When the joint can take water or movement
- Whether VAT is included
- Is the old sealant removed completely?
What affects the quote in Colwood
You’ll get a clear quote before we start. It takes into account:
- How much old sealant there is and how hard it is to remove
- How many areas need sealing
- The type of sealant required
- Whether there’s mould to deal with
Doing several joints on one visit is usually more efficient than separate visits, so tell us about everything that needs sealing. You will get one clear quote for the whole job.
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:
- If it’s domestic, commercial or a hotel
- Pictures of the joints, sent by email
- Any access issues, like height or stairs
- The problem you’ve noticed
If you are in Colwood and need new build mastic, phone 0345 464 0079 or send us an email. Tell us what the problem is and where, and you will get a clear quote before any work starts.
Different surfaces, different methods
Plot handovers
Taking time over preparation reduces return visits. Dust from the build is removed first.
Skirting and floors
Wet-area floor joints need a flexible seal. They get a flexible, water-resistant sealant.
What happens on the day
A visit follows a simple pattern: we check the joints, protect the area around them, carry out the job and clear up. Most jobs take a few hours for most snagging lists, longer for a run of plots. Somewhere as small as Colwood, access is often the only tricky part. If the job is outside, mention outbuildings, exposed walls and how to reach them.
- First we work through your snagging list or plot schedule with you.
- We cut out every bit of the failed or messy sealant.
- 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.
- We check every joint and tell you how long each needs to cure.
Preparing for the visit
- Mention if the joints have been sealed before
- Mention any leaks or damp you’ve noticed
- Where the joints are inside, avoid wetting them before we arrive
Get a quote
Need a quote? Please call 0345 464 0079 or send us an email and tell us about the job. We’ll explain what we’d do and give you a clear quote before we start.
Advice
New homes and floors in Colwood
The South East is one of the drier parts of the UK, but outside sealant still needs a dry, clean surface, so outdoor work is planned around the forecast.
In and around Colwood, as anywhere, good new build mastic starts with a clean, dry, properly prepared joint.
Colwood is about 5 miles north-west of Burgess Hill, in West Sussex. For new build mastic in and around Colwood, it’s easy to get a quote: please phone 0345 464 0079 or send us an email. We cover West Sussex from our Crawley base. 371 places in West Sussex are on our list, from the larger towns to small villages. You can also see our page for Crawley, roughly 8 miles from Colwood.
We cover every part of the RH17 postcode area for new build mastic and the streets around it. New build mastic is available to properties on Earwig Lane and Cross Colwood Lane and the roads around them. We also cover Crabtree (1 mile north-west), Lower Beeding (2 miles north-west), Slaugham (3 miles north), Plummers Plain (3 miles north) and Monk's Gate (3 miles north-west). We also work in nearby towns such as Crawley (8 miles north), Horsham (6 miles north-west), Worthing (15 miles south-west), Haywards Heath (6 miles east), Burgess Hill (5 miles south-east) and East Grinstead (13 miles north-east).
What’s near Colwood
Locally, jobs take us to homes and businesses close to Leonardslee, among other places. Nearby you will also find The Dene Hospital (3.8 miles south-east) and Cuckfield Museum (3.7 miles east). Open spaces near Colwood include Blunts Wood and Paiges Meadow.
FAQs for Colwood
Can you do new build mastic in Colwood?
Yes. We work across London and the South East, and Colwood is part of that. Just ring 0345 464 0079 or send us an email with a few details of the job, and we’ll give you a clear quote.
Do you cover smaller places like Colwood?
Yes, smaller places are covered as well as towns. Our work covers London and the South East. Let us know about access, parking and anything unusual about getting there when you book.
Can you quote for more than one area?
Of course. Doing several areas at once is usually more efficient.
Can you reseal over the builder’s sealant?
No. New silicone will not bond to old silicone, so sealing over the top fails quickly. We cut the old bead out completely.
Do you do commercial work?
Yes. We can plan bigger jobs in stages to suit the site.
Do you hold any approvals?
Yes. We’re ARBOMaster approved, the scheme for applicators of Arbo sealants.
Will it make a mess?
Not at all. The area is protected while we work and cleaned up afterwards.
Do you work for letting agents?
Yes, we do. Domestic, commercial and hotel work are all part of what we do, and we are fully insured.