East Sussex · England
Sand Mastic in Northease
Professional sand mastic in and around Northease, with every bit of old sealant taken out first and a 12-month guarantee.
- Window mastic to renew ahead of painting
- Weathered mastic on the most exposed windows
- Old cement repairs round a window that have failed
Frames and glazing around Northease
With historic houses such as Monk's House (about 0.7 miles east) nearby, there’s older building stock in the area around Northease as well as newer homes. In older buildings, older timber frames in brick or stone need a different approach from a modern uPVC window. 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.
Rented homes near Southease station change hands often, and cracked sand mastic around sash windows lets in the draughts tenants complain about. If you live in an older home near St Peter's Church, replacement windows fitted into old openings often leave uneven gaps that need backing and a flexible joint.
Northease is about 3 miles south of Lewes, in East Sussex. If you need sand mastic in Northease, it’s easy to get a quote: please phone 0345 464 0079 or email us. We’re based in Crawley and cover East Sussex. Northease is one of 289 places in East Sussex where we work for sand mastic. Our Brighton page covers work nearby.
Postcode districts we cover here for sand mastic: BN7. Neighbouring places we cover for sand mastic include Rodmell (1 mile south-east), Iford (1 mile north-west), Kingston near Lewes (2 miles north-west), Southover (2 miles north) and Cliffe (2 miles north). Within a short drive, we also cover Eastbourne (13 miles east), Seaford (6 miles south-east), Hailsham (11 miles east), Uckfield (10 miles north-east), Newhaven (4 miles south-east) and Peacehaven (3 miles south).
Landmarks near Northease
Around Northease, our work takes us to homes and buildings near Lewes and Laughton Levels. The nearest railway station is Southease station, roughly 1.4 miles south-east of the centre. Nearby you will also find Lewes Castle (2.2 miles north) and Lewes Victoria Hospital (2.4 miles north). Green spaces nearby include Southerham Farm and Itford Hill.
Sand mastic in Northease, done properly
Silicone on a period window often looks wrong and is not always the right material. Sand mastic gives a finish that matches the age of the house and we can swap the silicone for it. We work on tenement windows, stone surrounds and period & listed homes, and the jobs we see most are patchy fillers round a sash window and a silicone bead on a sash window that spoils the look.
Somewhere as small as Northease, older homes often have timber frames set in stone or brickwork. Older buildings like these don’t always suit modern silicone, so the sealant has to be chosen to suit the building.
Your job is guaranteed for a year, as with all our work.
- Place
- Northease (BN7)
- Region
- East Sussex
- Guarantee
- One year on every job
- Quotes
- Quoted before any work starts
- Phone
- 0345 464 0079
- Page updated
- 26 October 2026
When something else is needed
A few problems are outside what sealant work can do:
- Masonry that needs repairing
- Decisions on consent for listed homes
- Rotten sashes, sills or window boxes (a joiner’s job)
If in doubt, phone 0345 464 0079 or email us and we will say what we think.
Joints and surfaces we work on
- Brick reveals
- Sash and case windows
- Tenement windows
- Period & listed homes
- Stone surrounds
- Timber door frames
What we do, step by step
You do not need to clear the whole room or building, 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 in most cases. In a small place like Northease, access is generally the main thing to plan. If the job is outside, mention outbuildings, exposed walls and how to reach them.
- We look at the surrounds with you and agree the joints to renew.
- Old mastic and any loose material are raked out.
- We pack any deep voids first.
- The sand mastic is mixed and pressed into the joint by hand.
- The surface is finished to suit the stone or brick.
Preparing for the visit
- Keep pets and children clear of the area while we work
- Mention any parking rules near the property
- Mention if the joints have been sealed before
Get a quote
Call for a quick quote, or send an email if you’d rather. Tell us about the joints that need doing and we’ll talk you through the work.
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Why it’s worth doing now in Northease
Not every draught comes from the sashes themselves. Gaps between the frame and the wall can be just as bad and new mastic seals them. In a small place like Northease, homes can be exposed to wind and rain, which finds any gap, and older walls, once damp, take a long time to dry.
Homes and businesses are quoted the same way: the amount of work, the access and the products needed, plus any working-time requirements on site. Ask us for a quote and we’ll go through it with you.
Why Northease clients choose us
- Arbo and Everbuild products
- 4.9 on Google from 180+ five-star reviews
- We never seal over old sealant
- Neat joints and a tidy finish
See what affects the cost and customer reviews.
Other services in Northease
FAQs for Northease
Is Northease within the area you cover?
Yes, we do. We work across London and the South East, and smaller places are part of that. Longer journeys are simply planned in advance.
Can you help a landlord with a rental near Southease station?
Yes. We work for landlords and agents as well as householders. Just ring 0345 464 0079 or drop us an email with the address and what needs doing, and we will send you a clear quote.
Are you an approved applicator?
Yes. We are ARBOMaster approved, the scheme for applicators of Arbo sealants.
Will it make a mess?
No. The area is protected while we work and cleaned up afterwards.
Can you quote for more than one area?
Yes. Tell us about everything you’d like done.
Is sand mastic better than silicone for my windows?
That depends on your windows. On many period windows, sand mastic looks right and suits the building and newer frames normally get a flexible sealant.
Can you replace silicone on a period window with sand mastic?
Normally, yes. With the silicone removed and the joint cleaned we point it with sand mastic.
How long does the job take?
It depends on the size of the job, but most jobs take a few hours per window, depending on the condition of the joints. We’ll give you a better idea when we quote.
What the job involves on each surface
Stone surrounds
Stone surrounds suit sand mastic well. It finishes to look like part of the surround.
Sash and case windows
The box of a sash and case window sits in the stone or brick opening. Sand mastic seals the joint round it.
Should I try it myself first?
Some jobs are best left to a professional: work at height, external movement joints, fire-rated sealant and large areas call for the right materials, safe access and experience.
Too much sealant is as bad as too little. A thick, smeared bead looks untidy and does not move well, and the joint depth matters as much as the finish.
How to look after the new joints
No joint lasts for ever, but care makes a real difference. Our tips:
- Have rotten timber repaired before new mastic goes in
- Ask us before painting near the mastic
- Make sure water runs off the sill
- Look over the window mastic once a year
Leave the new mastic unpainted, which is the traditional advice. Ask us before any decorating around it.
It’s best to renew mastic before painting the windows. Paint over cracked mastic only covers it up.
When to call us in Northease
Most of it is simply age. Sand mastic is a maintenance item like any pointing, depending on exposure and upkeep.
Common reasons people contact us include:
- Draughts and rain around sash boxes
- Open joints round the window box
- Gaps round a timber door in stone or brick
- Old cement repairs round a window that have failed
For site and facilities teams at buildings such as Priory School, the mastic around its windows and doors needs looking after like any other building’s.
What to look for in a quote
- The length of the guarantee
- What happens if the job turns out different
- Which sealant they’ll use, and why
- How the surfaces are prepared before sealing