East Sussex · England

Sand Mastic in Northbridge Street

Sand mastic for Northbridge Street and the surrounding area: careful preparation, the right product and tidy work. Ask us for a quick quote.

  • A silicone bead on a sash window that spoils the look
  • Patchy fillers round a sash window
  • Gaps between timber frames and stone or brick

Sand mastic for Northbridge Street homes and businesses

Aftercare tips

How long the joints last depends on use and care. We suggest:

  • Inspect the joints round the windows every year or so
  • Leave the new mastic unpainted
  • Do not run silicone over sand mastic
  • Plan mastic work ahead of painting

Do not run silicone over the new mastic. If you see a crack, ask us to take a look rather than patching it.

It’s best to renew mastic before painting the windows. Painting over failed mastic hides the problem for a while.

How we handle sand mastic in Northbridge Street

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. If you have window mastic to renew ahead of painting and failed mastic on an exposed elevation, we can help, on tenement windows, brick reveals and timber door frames alike.

Homes in small places like Northbridge Street 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.

All of our work is guaranteed for twelve months, and the guarantee is the same wherever you are.

Place
Northbridge Street (TN32)
Wider area
East Sussex
Guarantee
12 months on all our work
Price
Quoted before any work starts
Phone
0345 464 0079
Last updated
26 October 2026
Mr Mastic applicator sealing the top of a white uPVC door frame on a red-brick house

Northbridge Street questions

Do you cover Northbridge Street for sand mastic?

Yes. We work across London and the South East, and Northbridge Street is part of that. Just call 0345 464 0079 or send us an email with a few details of the job.

Is Northbridge Street within the area you cover?

Yes, we do. We work across London and the South East, and smaller places are part of that. The journey is planned ahead, so it helps to know about access.

Can I paint the new mastic?

Traditional guidance is not to paint over sand mastic. Ask us before you decorate around it and we’ll advise.

Will the old sealant be removed?

Yes, every time. New sealant won’t bond properly to old, so any old material comes out before anything new goes in.

Can you work on commercial sites?

Yes. Commercial and hotel work is a large part of what we do. Working times can be discussed when we quote.

Can I add another job to the visit?

Of course. Combining jobs makes good use of the visit, so mention them when you ask for a quote.

Is it OK to seal over old sealant?

No. Fresh sealant doesn’t stick to old sealant, and anything trapped underneath, including mould and water, stays there. It all has to come out first.

Do you work for letting agents?

Yes. As well as homeowners, we work for landlords, agents, businesses and hotels.

Landlord and commercial work in Northbridge Street

In hotels, rooms out of use cost money, so we plan the work room by room around your bookings where we can. Hotel work is part of what we do, alongside homes and businesses.

Landlords and letting agents in Northbridge Street can book us as well as householders. Resealing between tenancies keeps a property looking cared for.

How it works

Our applicators work methodically: protect, prepare, seal, tidy. Typically it takes a few hours per window, depending on the condition of the joints. In a small place like Northbridge Street, access is generally the main thing to plan. For outside work, also let us know about exposed walls and any outbuildings involved.

  1. Each surround is checked first.
  2. We rake out the old mastic and clean the joint.
  3. We fill deep gaps so the new mastic isn’t too thick.
  4. We point the joint with sand mastic by hand.
  5. We finish the mastic to a tidy line.

Before we arrive

  • Tell us if parking is tricky
  • Mention any sign-in or site rules at work premises
  • Mention if the joints have been sealed before

How to get a quote

It all starts with a short chat. Tell us what’s wrong, where it is and how much there is, and we will talk you through what we’d do. When it suits you, ring 0345 464 0079 or email us.

Get a price

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Quotes for sand mastic in Northbridge Street

For a quick quote, just ask. The main things that affect it are:

  • Mould in or behind the old joints
  • Which sealant suits the joint
  • How many areas need sealing
  • The number and length of the joints

The cost depends on the size of the job, how much old material has to come out and access to the work. We give a clear quote before any work starts, so you know where you stand.

Helping us quote

What to tell us when you ask for a quote:

  • How we’d reach the joints
  • What’s wrong with the joints now
  • Photos by email, if that’s easy
  • If it’s domestic, commercial or a hotel

Every job is quoted individually, so the first step is telling us about yours. Simply ring 0345 464 0079 or email us and describe the job and send photos if you have them.

Can I do it myself?

The difference is mostly in the preparation and the product. We take joints back to clean, dry surfaces, and the sealant is chosen for how the joint moves and where it is.

The biggest DIY mistake is sealing over old sealant. New silicone won’t bond to old, so it peels away and traps moisture behind it. Everything old must be removed first.

What the job involves on each surface

Sash and case windows

Most of our sand mastic work is on sash windows. Each joint round the box is raked out and renewed.

Period and listed homes

Period homes look their best with traditional materials, and sand mastic is one of them.

Northbridge Street homes and the weather

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. With historic houses such as Durhamford Manor (about 3.9 miles south-east) nearby, there’s older building stock in the area around Northbridge Street as well as newer homes. In older buildings, older frames set in brick or stone need a sealant that suits them, and sometimes that’s traditional sand mastic.

Schools such as Salehurst Church of England Primary School are buildings too, and larger buildings have plenty of frames, and the mastic around each one ages. For an older house near a landmark such as The Parish Church of St Mary, replacement windows fitted into old openings often leave uneven gaps that need backing and a flexible joint. Letting a property close to Robertsbridge station? Then cracked sand mastic around sash windows lets in the draughts tenants complain about.

Northbridge Street is about 9 miles north-west of Hastings, in East Sussex. Every kind of property in Northbridge Street is covered for sand mastic. The work is guaranteed for a year. Our East Sussex coverage runs to 289 places, Northbridge Street among them. Brighton is on our list too, about 29 miles from Northbridge Street.

We cover every part of TN32 for sand mastic and the streets around it. Whether your property is on Church Lane, Coronation Cottages and Andrews Close or anywhere close by, our applicators can take on the job. If you’re just outside Northbridge Street, we cover Salehurst (1 mile east), Robertsbridge (1 mile south-west), John's Cross (2 miles south), Mountfield (3 miles south) and Oxley's Green (4 miles south-west). Further out, we also cover Hastings (9 miles south-east), Bexhill-on-Sea (10 miles south), Hailsham (13 miles south-west), Crowborough (14 miles west), St Leonards (10 miles south) and Hastings Old Town (10 miles south-east).

What’s near Northbridge Street

Locally, jobs take us to homes and businesses close to Robertsbridge Community College and The Salehurst Halt Public House. The closest station to Northbridge Street is Robertsbridge station, roughly 0.7 miles south-west. Other landmarks nearby include Ticehurst House Hospital (5.4 miles north-west).

Map of Northbridge Street © OpenStreetMap contributors

When it isn’t the sealant

It helps to know what we cannot do:

  • Cracked or broken glass
  • Decayed frames that need repair
  • Decisions on consent for listed homes

If you are not sure, just ring 0345 464 0079 or drop us an email and we will give you a straight answer before you book.

Surfaces we seal

  • Period & listed homes
  • Sash and case windows
  • Brick reveals
  • Tenement windows
  • Stone surrounds
  • Timber door frames
20+ yearsMastic and sealant specialists
ARBOMaster approvedApproved applicator for Arbo sealants
Fully insuredDomestic, commercial and hotels
One-year guaranteeOn every job