West Sussex · England
Sand mastic for sash & case windows in North Heath, West Sussex
Sand mastic for North Heath and the surrounding area: the right sealant, proper preparation and a neat finish. Call for a quick quote.
- Mastic round period door frames that has failed
- Patchy fillers round a sash window
- Tired mastic found when preparing windows for paint
Sand mastic for homes and businesses in North Heath
Sand mastic skins over fairly quickly but full hardening takes longer. Traditional guidance is not to paint over it, so ask us before you decorate. We work on stone surrounds, timber door frames and tenement windows, and people most often call us about crumbling sand mastic round a window and open joints round the window box.
Homes in small places like North Heath often stand in the open, with little to shelter their windows from wind and rain. That exposure dries out and cracks the mastic around frames and sills faster.
We guarantee the work for a year. If there’s a problem with our work within the year, let us know and we’ll sort it.
- Place
- North Heath (RH20)
- Wider area
- West Sussex
- Guarantee
- One year on every job
- Price
- A clear quote up front
- Telephone
- 0345 464 0079
- Page updated
- 26 October 2026
Landlord and commercial work in North Heath
If you manage several properties in or around North Heath, several properties can be quoted together. Just tell us the addresses and what each one needs, and photos by email help.
From a single let to a portfolio, the work is the same standard: old sealant fully removed, joints prepared properly and a one-year guarantee.
North Heath homes and the weather
With historic houses such as Old Place Manor (about 2.1 miles south-west) nearby, there’s older building stock in the area around North Heath as well as newer homes. In older buildings, older timber frames in brick or stone need a different approach from a modern uPVC window. London and the South East are among the drier parts of the UK, yet outdoor joints still have to be sealed dry, so jobs are booked with the weather in mind.
Letting a property close to Pulborough station? Then any sash windows need sound mastic to keep draughts and rain out. Historic houses such as Old Place Manor, about 2.1 miles south-west, show how far back building around North Heath goes, and older homes nearby need a sealant that suits their walls.
North Heath is about 9 miles south-west of Horsham, in West Sussex. Homes, rented property, offices and hotels in North Heath is covered for sand mastic, old or new, large or small. The work is guaranteed for a year. North Heath is one of 371 places in West Sussex where we work for sand mastic. Our Crawley page covers work nearby (15 miles or so).
Here we cover the RH20 postcode area for sand mastic. That includes homes and businesses on Gay Street Lane and Stane Street. Nearby, we also carry out sand mastic in Gay Street (1 mile south-east), Adversane (1 mile north), Codmore Hill (1 mile south-west), Broomershill (1 mile south) and Nutbourne (2 miles south). Within a short drive, we also cover Crawley (15 miles north-east), Horsham (9 miles north-east), Worthing (11 miles south), Burgess Hill (15 miles east), Littlehampton (12 miles south) and Shoreham-by-Sea (14 miles south-east).
Local landmarks in North Heath
The nearest railway station is Pulborough station, about 2.4 miles south-west. For a walk, there’s The Mens.
The process
There’s no need to move everything out before we come, only the area right around the joints. Everything nearby is protected, and the job takes a few hours per window, depending on the condition of the joints for a typical job. For a village or hamlet like North Heath, the journey is planned in advance: 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.
- We start by checking each surround and agreeing the joints to renew.
- 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.
- The finish is dressed so it sits neatly against the stone or brick.
Before we arrive
- Tell us about access, such as stairs, a lift or high-level joints
- Tell us about any water getting in
- Mention any parking rules near the property
Get a quote
To get a quote, phone 0345 464 0079 or email us with the location and a short description of the problem. You’ll have a clear quote before we start.
Advice
Your questions about sand mastic in North Heath
Is North Heath within the area you cover?
Yes. North Heath is within the area we cover, which takes in towns, villages and rural addresses. 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 help a landlord with a rental near Pulborough station?
Yes, landlords and agents are among the people we work for, and several properties can be quoted together. You can ring 0345 464 0079 or send us an email with the details for a clear quote.
Does someone need to be in?
For indoor joints, yes, someone needs to let us in. Once we have agreed the job, you don’t need to watch us work.
Where is Mr Mastic based?
Our base is Crawley. Our area covers South East England, London and Scotland.
Will you leave a mess?
No. We protect the surfaces around the joints, and we tidy up before we go.
Can you match the sealant colour?
We will suggest a colour to suit the surroundings. The product needed can limit the range.
What exactly is sand mastic?
A traditional pointing material made from sand and a linseed-oil-based binder for the joint between timber frames and masonry.
Do you do commercial work?
Yes. Hotels, offices and other businesses use us, and we are fully insured.
Why act early in North Heath
Replacing sash windows is a big decision for a period home, and in listed buildings it may need consent. Where the frames are in good order, new mastic seals the surround. In a small place like North Heath, homes can be exposed to wind and rain, which finds any gap, and older walls, once damp, take a long time to dry.
What you pay reflects the work, not guesswork. That’s why we ask a few questions first and agree the price before starting.
Why us?
- Trusted Arbo and Everbuild sealants
- 180+ five-star Google reviews
- Tidy, careful work
- Any old sealant cut out fully, not covered over
Take a look at how sealant jobs are priced or what customers say.
Towns and villages near North Heath
Other services in North Heath
DIY sealant or a professional job?
If you’ve already had a go yourself, that is fine. We remove it and do the joint properly, so tell us about it when you ask for a quote.
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.
Looking after it afterwards
Aftercare is simple, and it makes a real difference:
- Check the mastic when you check the paintwork
- Ask the planning authority about consent for listed or conservation-area homes
- Have rotten timber repaired before new mastic goes in
- Make sure water runs off the sill
Avoid painting over the new mastic, which is the traditional advice. If you’re redecorating, ask us first.
It’s best to renew mastic before painting the windows. Paint over cracked mastic only covers it up.
Honest limits
To be straight with you, some problems need a different trade:
- Sashes that rattle, stick or will not open
- Damaged stone surrounds
- Putty and glazing repairs
If you’re not sure, just ring 0345 464 0079 or send us an email and we’ll give you a straight answer.
Where we work in North Heath
- Tenement windows
- Timber door frames
- Sash and case windows
- Period & listed homes
- Stone surrounds
- Brick reveals
What the job involves on each surface
Stone surrounds
Stone openings are rarely perfectly straight, so the gap isn’t the same all the way round. We shape it by hand to follow the stone.
Brick reveals
Sand mastic is also used where timber frames meet brick. It suits older brickwork.