West Sussex · England
Window Mastic in Colgate
Window mastic for Colgate, by sealant specialists with 20+ years’ experience. 180+ five-star Google reviews and a 4.9 rating.
- Leaking joints at the ends of sills
- Gaps between the frame and the inside reveal
- Cold air getting in at the frame edge
Window mastic in Colgate
Over two decades of sealing frames has taught us which products suit which walls. We are fully insured ARBOMaster approved applicators, and every job is covered by a 12-month guarantee. We work on composite doors, aluminium frames and window sills, and common reasons people get in touch are gaps where the sill meets the wall and whistling draughts around closed windows.
In a village or hamlet like Colgate, older cottages and farmhouses often have timber windows set in stone or brick. Older buildings like these don’t always suit modern silicone, and sometimes a traditional sand mastic is the better choice.
Each job carries a 12-month guarantee, large or small.
- Where
- Colgate (RH13, RH12)
- Region
- West Sussex
- Cover
- A year, on every job
- Quotes
- A clear quote up front
- Phone
- 0345 464 0079
- Page updated
- 26 October 2026
Colgate: your questions answered
Can you help a landlord with a rental near Faygate station?
Yes, rental work is part of what we do. You can call 0345 464 0079 or send us an email with the address and a few details, and we will give you a fixed price before we start.
Do you cover smaller places like Colgate?
Yes, smaller places are covered as well as towns. Our work covers London and the South East. Just mention lanes, gates or anything else about the route when you book.
Do you take out the old sealant first?
Yes, always, and completely. New silicone doesn’t stick to old silicone, so the joint is cleaned back first.
Will you leave a mess?
Very little: the area around the joints is protected first, and we clear up the old sealant and our materials before we leave.
Can you seal the gap between the frame and the plaster indoors?
Yes, we do both. Inside, the joint between frame and plaster is sealed neatly.
Can you work on commercial sites?
Yes. We work in offices, washrooms, hotels and other commercial premises. Working times can be discussed when we quote.
Will resealing my frames help with draughts?
Yes, where the draught is at the frame edge. We check where the draught is before work begins.
Where do you work from?
We’re based in Crawley, and we work across South East England, London and Scotland.
Also near Colgate
Other services in Colgate
Honest limits
Some problems need a builder, plumber or other trade rather than us:
- Damp problems in the wall away from the window
- Misting between the panes of a double-glazed unit (that needs a new unit)
- Broken hinges, locks or handles
If in doubt, ring 0345 464 0079 or email us and we’ll say what we think.
Joints and surfaces we work on
- Window sills
- Composite doors
- uPVC windows
- Patio & French doors
- Timber windows & doors
- Aluminium frames
What we are called out for in Colgate
Joint shape matters as much as the product. A skim of sealant over a wide gap soon tears, and a gap filled solid can’t flex. That’s what backing rod is for.
Look out for any of the following:
- Draughty joints inside around the window
- Whistling draughts around closed windows
- Gaps left after new windows were fitted
- Water coming in at the bottom corners of a door
If you look after a building such as Colgate Primary School, the mastic around its windows and doors needs looking after like any other building’s.
Comparing quotes
- How hidden problems are handled
- Are they insured?
- What guarantee comes with the work
- Whether VAT is included
Looking after it afterwards
Simple care keeps the joints in good condition. Our advice:
- Keep paint and stain on wooden frames in good order
- Avoid blasting the frames with a pressure washer
- Clean frames with a soft cloth and soapy water
- Clear any debris from frame drain holes
Keep the new mastic undisturbed while it cures, following the cure time we give you. Do not point a pressure washer at the joints.
Water gets in quietly when mastic fails. Often the first sign is a damp patch inside or flaking paint on the reveal. Early resealing stops it reaching that point.
What affects the quote in Colgate
Some jobs are bigger than they look, and some smaller. What affects the quote:
- Working hours on commercial sites
- How easy the joints are to reach
- Any mould that needs treating
- The amount of work
No two jobs are quite the same, so each one gets its own quote. Size, access and the product the joint needs all make a difference.
Helping us quote
When you call or email, these details help:
- The rough size of the job
- The type of property
- A few pictures by email, if you can
- Any access issues, like height or stairs
Every job is quoted individually, so start by telling us what you need. Simply phone 0345 464 0079 or drop us an email and describe the job and send photos if you have them.
How the job changes by surface
Aluminium frames
Large aluminium doors have long joints down each side and across the head, and the bottom joint sees the most water. Each is cleaned, backed where deep and resealed.
Window sills
The end joints of a sill tend to fail before the rest. A tight seal at each end keeps rain out of the wall.
Colgate homes and the weather
Historic houses like Tyes Place (about 4.5 miles south-east) are a reminder that the area around Colgate has older buildings as well as new. Where a home is older, older frames set in brick or stone need a sealant that suits them, and sometimes that’s traditional sand mastic. Compared with the north and west, the South East gets less rain, though outdoor sealant still has to go onto a dry joint, so the forecast decides the day.
For landlords with property near Faygate station, renewing tired window mastic between tenants heads off draught and damp complaints. In the older streets around St. Saviour's Church, frames set in older brick or stone need a sealant that suits the wall as well as the frame.
Colgate is about 3 miles south-west of Crawley, in West Sussex. From the centre of Colgate to the outskirts, window mastic is available for homes and businesses alike, from flats and houses to offices and hotels. Colgate is one of 371 towns and villages in West Sussex we cover for window mastic.
Here we cover the RH13 and RH12 postcode area for window mastic. You’ll find streets such as Forest Road, Vicarage Close and Blackhouse Road, and we cover them all. If you are just outside Colgate, we cover Kilnwood Vale (1 mile north), Faygate (1 mile north-west), Broadfield (2 miles north-east), Roffey (2 miles west) and Handcross (3 miles south-east). Larger places within reach include Crawley (3 miles north-east), Horsham (4 miles west), Haywards Heath (9 miles south-east), Burgess Hill (10 miles south-east), East Grinstead (11 miles east) and Storrington (14 miles south-west).
Near you in Colgate
We work in homes and buildings around The Dragon pub, Target Hill Park and Cottesmore School, among other places. The closest station to Colgate is Faygate station, about 1.3 miles north-west of the centre. Other landmarks nearby include Crawley Museum (3.4 miles north-east) and County Mall (3.4 miles north-east). Green spaces nearby include Tilgate Lake and Warnham LNR.
What happens on the day
Before we leave, we go over the finished joints with you and tell you how long to leave it. The visit itself generally takes a few hours for a handful of frames, longer for a whole house, depending on the size of the job. Somewhere like Colgate needs a little journey planning: tell us about narrow lanes, gates, long drives and where we can park. Everything for the job comes with us, so a second trip is avoided where possible.
- First, we go round the frames with you and agree the list.
- The old mastic is cut out and scraped back to clean surfaces.
- Where the gap is deep, backing rod goes in first.
- A flexible exterior sealant is applied in a colour to suit the frame.
- Every joint is tooled smooth and checked before we leave.
How to prepare
- Tell us about access, such as stairs, a lift or high-level joints
- Tell us if parking is tricky
- Move anything stored near the joints
Ask for a quote
There’s no standard price list, as no two jobs are quite the same. Instead, your job gets its own clear quote. To get started, call 0345 464 0079 or send us an email.
Read more
Work for landlords, hotels and businesses
Mouldy or split sealant often shows up at the end of a tenancy. Several properties can be quoted together.
In hotels, rooms out of use cost money, so the work can be planned room by room. We have worked in hotels as well as homes and businesses.