West Sussex · England
Sand mastic for sash & case windows in Streat, West Sussex
Sand mastic for Streat and the surrounding area: careful preparation, the right product and tidy work. Ask us for a quick quote.
- Patchy fillers round a sash window
- Mastic that needs renewing before redecorating
- Mastic worn away on windows facing the weather
How we handle sand mastic in Streat
Old sand mastic cracks, crumbles and falls out over time and gaps open up round the frame. Renewing it closes the gap so the surround looks right again. If you are dealing with cracked mastic round a front door frame and gaps where the frame meets the masonry, we can help.
Mastic can only go onto a dry, clean joint, so window work in Streat is booked around the forecast. Let us know about access to all the frames, upstairs ones included.
You’re covered for a year from the day we finish. If anything isn’t right with it, phone 0345 464 0079 or email us.
- Location
- Streat (BN6, BN7)
- Region
- West Sussex
- Cover
- One year on every job
- Quote
- A clear quote up front
- Phone
- 0345 464 0079
- Updated
- 26 October 2026
How the visit works
A visit follows a simple pattern: we look at the joints together, mask and protect the surrounding surfaces, do the work and clear up. It normally takes a few hours for a single window, longer for several. Somewhere as small as Streat, access is often the only tricky part. For outside work, also let us know about exposed walls and any outbuildings involved.
- We look at the surrounds with you and agree the joints to renew.
- Old mastic and any loose material are raked out.
- Deep gaps are packed so the mastic sits at the right depth.
- The sand mastic is mixed and pressed into the joint by hand.
- We dress the finish so it sits neatly against the masonry.
How to prepare
- Mention any tricky access
- Tell us about any water getting in
- For indoor joints, keep the area dry beforehand if you can
Getting a quote
It all starts with a short chat. Tell us what’s wrong, where it is and how much there is. Whenever you’re ready, ring 0345 464 0079 or drop us an email.
Read more
Honest limits
Sealant isn’t the answer to every problem, and we’d rather say so up front. It will not solve:
- Whether work needs listed building consent
- Sash cords, weights and draught-proofing of the sashes
- Decayed frames that need repair
If you are not sure, just call 0345 464 0079 or email us and we will give you a straight answer before booking.
Joints and surfaces we work on
- Sash and case windows
- Timber door frames
- Period & listed homes
- Brick reveals
- Stone surrounds
- Tenement windows
Landlord and commercial work in Streat
Letting agents often deal with us directly. Tell us the address, the job and how access works and we’ll give you a quote.
We also work for businesses, from offices to washrooms and kitchens. For commercial premises, we can talk through working times when we quote.
Sand mastic in Streat: local notes
The South East is one of the drier parts of the UK, though outdoor sealant still has to go onto a dry joint, so the forecast decides the day.
In the older streets around Streat Church, the joint between an old wall and a newer frame is normally the first place rain gets in. For site and facilities teams at buildings such as Plumpton Primary School, the mastic around its windows and doors needs looking after like any other building’s.
Streat is about 3 miles south-east of Burgess Hill, in West Sussex. If you need sand mastic in Streat, it’s easy to get a quote: please ring 0345 464 0079 or email us. We’re based in Crawley and cover West Sussex, Streat included. 371 places in West Sussex are on our list, from the larger towns to small villages. You can also see our page for Brighton, roughly 6 miles from Streat.
Jobs for sand mastic in BN6 and BN7 is quoted and booked the same way as anywhere else. We also cover the places around Streat: Plumpton (1 mile south-east), Plumpton Green (1 mile north-east), East Chiltington (1 mile east), Ditchling Common (2 miles north) and Chiltington (2 miles east). Further out, we also cover Crawley (14 miles north), Horsham (15 miles north-west), Worthing (15 miles south-west), Haywards Heath (6 miles north), Burgess Hill (3 miles north-west) and East Grinstead (15 miles north).
Around Streat
The closest station to Streat is Plumpton station, about 1.1 miles north-east. Other landmarks nearby include Ditchling Museum of Art + Craft (1.6 miles west) and Lewes Victoria Hospital (4.5 miles south-east). Open spaces near Streat include Ditchling Beacon and Bedelands Farm Nature Reserve.
Towns and villages near Streat
More services for Streat
Aftercare tips
To keep the joints looking good and working properly:
- Get any rot dealt with first
- Renew mastic before redecorating the windows
- Ask the planning authority about consent for listed or conservation-area homes
- Make sure water runs off the sill
Keep gutters and sills clear so water runs away from the surround. Water sitting against the mastic shortens its life.
Fine cracks show the mastic is starting to fail. Renewing it then is simpler than waiting until it falls out.
What we’re called out for in Streat
Shallow joints are a common cause. Mastic that is too thin cracks and drops out, which is why we pack deep voids first and get the depth right.
Most people get in touch after spotting something like this:
- Patchy fillers round a sash window
- Weathered mastic on the most exposed windows
- Gaps where the frame meets the masonry
- Draughty sash windows at the surround
Letting a property close to Plumpton station? Then cracked sand mastic around sash windows lets in the draughts tenants complain about.
Questions to ask before booking
- What happens if the job turns out different
- Whether the sealant suits the joint
- What guarantee comes with the work
- What preparation is included
Why act early in Streat
New sash windows are a major, costly change, and in listed buildings it may need consent. If the frames are sound, renewing the mastic deals with gaps and draughts at the surround. Where a wall is exposed, as many are in small places like Streat, wind-driven rain gets into any failed joint, and damp in older walls is slow to dry out.
Commercial jobs are quoted on the same basis as homes: the amount of work, the access and the products needed, plus any working-time requirements on site. Ask us for a quote and we will explain what it covers.
What you get with us
- Domestic, commercial and hotel work
- Any old sealant cut out fully, not covered over
- Quality sealants from Arbo and Everbuild
- Anti-fungal silicone where joints get wet
Read our cost guide or what customers say.
Common questions in Streat
Is Streat within the area you cover?
Yes, we do. Our work covers London and the South East, from towns to the smallest places. Longer journeys are simply planned in advance.
Can you help a landlord with a rental near Plumpton station?
Yes, we work for landlords and agents. Just call 0345 464 0079 or email us and tell us about the property, and we will send you a clear quote.
Will the old sealant be removed?
Yes. All of the old material is cut out and the joint cleaned before resealing.
Can new sealant go over the old?
No. The old sealant always comes out first.
What guarantee comes with the work?
Our 12-month guarantee applies on every job.
Do you work for hotels and businesses?
Yes, regularly. We can plan bigger jobs in stages to suit the site.
What does sand mastic cost?
There’s no set price, as it depends on the job: its size, the old material, access and the product needed. We agree the price before any work begins.
How long does sand mastic take?
As a guide, most jobs take a few hours for a single window, longer for several. Bigger jobs take longer.
What the job involves on each surface
Timber door frames
Sand mastic is used round timber door frames too. The method is the same as for windows.
Tenement and terrace windows
Upper-floor windows need access planning. Let us know the floor and we will confirm access.