Construction and new-build mastic in Northiam, East Sussex
We carry out mastic packages for new-build and refurbishment projects in Northiam and the surrounding area. Send photographs or drawings for a fixed quote.
- Different trades sealing to different standards
- Perimeter gaps outside the sealant’s range
- Mastic snags holding up handover
Construction mastic near Northiam
Share the site address and what’s failing, and we’ll reply with a fixed quote or arrange a visit.
Owners, agents and contractors
For main contractors, we work as the sealant subcontractor on new-build and refurbishment projects. Programme, specification and site rules come first, with CSCS-carded applicators on site.
As a CHAS accredited contractor and Constructionline member, we’re straightforward to vet for your supplier list. We’re fully insured, and our insurance certificate can go with the quote.
About our construction mastic in Northiam
We work to the specification and the programme rather than whatever product is to hand. If a product is named, that’s what goes in; any alternative we suggest is put to you before anything changes. Joint widths, backing, primers and tooling follow the manufacturer’s guidance so the detail on the drawing is what ends up on site. The enquiries we see most involve missed perimeter joints on a new elevation and inconsistent sealant finishes from plot to plot, on window and door perimeters, internal decorators’ caulk and brick and block movement joints. Facilities teams, main contractors and managing agents in Northiam tend to want the same three things: a fixed quote, no surprises on site and a 12-month guarantee behind the result.
For a site near Northiam, the mastic visit is planned so the right sealants, primers and backing rod are on hand. Send drawings or photos and the programme and we’ll quote to suit.
Building owners and contractors get the same cover: twelve months on the work we carried out. It doesn’t extend to damage, faults in the building or work by others, and we are upfront about that.
- Where
- Northiam (TN31)
- Wider area
- East Sussex
- Cover
- 12 months on every job
- Quote
- Fixed quote, scope in writing
- Telephone
- 01277 525 020
- Updated
- 3 November 2026
How the job changes by surface
Bathrooms, en suites and washrooms
Sanitary joints around baths, showers, basins and WCs need anti-mould sanitary silicone. Each joint is prepared, sealed and finished with a neat tooled line.
Window and door perimeters
Inside, a paintable sealant or decorators’ caulk is used where the joint doesn’t move much. We follow what’s specified with colours matched to the frame where needed.
Common questions from Northiam clients
Is Northiam off your patch?
Not at all: smaller places are covered as well as towns. London and every South East county are within our area. Where we can, we group nearby jobs to make the most of each trip.
What paperwork can you provide for a job in Northiam?
RAMS, insurance certificate, CSCS details: list what the site needs and we will confirm it with the quote. We’re CHAS accredited and a Constructionline member, with £5m public liability insurance and CSCS-carded applicators.
How do you work with the site programme?
Our work is sequenced around the programme. Each plot, floor or elevation is sealed when it’s ready and we tell you if something stops an area being sealed.
How much does the work cost?
Each job is quoted on its own details. For yours, ring 01277 525 020 or use the quote form.
How do I request a quote?
It works in four steps: send details, get a quote, we seal, guaranteed. Step one needs little more than photos and a postcode.
Can you fit around our working hours?
Give us your site hours and any access windows in your enquiry, and we’ll schedule the work to suit. Our office runs Monday to Friday, 8am until 5pm.
Can you work to our specification?
Specification first, then the maker’s instructions. Preparation, backing and depth follow the product guidance.
Towns and villages near Northiam
What else we do in Northiam
Construction mastic around Northiam: what changes locally
Central London is about 46 miles from Northiam. Towns within reach of London tend to keep building, from flats to offices and schools, which keeps mastic packages in demand. The South East is one of the drier parts of the UK. Even so, frost and condensation on steel and glass are common on winter mornings, so we time external mastic for dry faces and agree it with the site team.
For contractors at a school such as Northiam Church of England Primary School, sealing has to be finished before term starts. Hotel extensions and refits, at places such as Hayes Arms Hotel, 0.5 miles to the south of Northiam, usually run between busy periods, so the sealing is squeezed into short windows.
Northiam is about 9 miles north of Hastings, in East Sussex. Commercial clients in Northiam can call on us for mastic packages. 308 places across East Sussex fall within our area, Northiam among them. Our Brighton page has more on work in that area.
We cover the TN31 postcode districts. Among the streets we cover are Station Road, Main Street and Elizabeth Gardens. Northiam sits on or close to the A268. Just outside Northiam, we also work in Beckley (2 miles south-east), Beckley Furnace (3 miles south), Broad Oak (3 miles south), Flackley Ash (3 miles east) and Broadland Row (4 miles south). A short drive away, we cover Hastings (9 miles south), Bexhill-on-Sea (12 miles south-west), St Leonards (10 miles south), Hastings Old Town (10 miles south), Belmont (10 miles south) and Heathfield (15 miles west).
Around Northiam
We work on buildings around Hayes Arms Hotel and the streets around them. A little further out are The C.M Booth Collection (4 miles north). For a walk, there’s Flatropers Wood.
From enquiry to sign-off
Before any cutting starts, the area is protected: masking tape along the joint edges and sheeting over anything nearby. The work itself normally takes a few days on a modest refurbishment and longer on multi-plot or multi-storey schemes, and our waste is bagged and taken away as we go. Rural sites near Northiam may need directions, gate codes or a contact on site. Send that with the details and we will confirm the plan with the quote.
- We start with the drawings, specification and programme.
- We take off quantities and return a fixed quote.
- The sequence is agreed with the site manager.
- Plots or floors are sealed as they’re handed over.
- Joints are prepared, backed and sealed to the specification.
- After snagging, the work is handed over under our 12-month guarantee.
What we need from you
- Send any specification or drawings in advance
- Point out any areas we must not close
- Explain the parking and delivery arrangements
Get a fixed quote
Tell us about the building, the joints and when you need the work done, and a fixed quote will follow. To get it moving, phone 01277 525 020 or send details through our quote form.
Read more
What sets the cost
A fixed quote reflects the actual work. It allows for:
- Site requirements such as inductions and permits
- Specialist products, such as fire-rated or hygienic sealants
- Joint width, depth and condition
- Working within restricted access windows
A quote for mastic packages depends on quantities, condition and access. Call for a quote.
What we need to price the job
A few photos plus some basic facts will normally do. Please tell us:
- Whether the building will be occupied during the work
- Anything awkward about access or site hours
- Where the site is, with the postcode
- The asbestos register, for older buildings
A handful of photographs and a postcode is the fastest way to a quote. Upload them with the quote form, or call 01277 525 020 or email us to discuss it first.
Leave it or put it right?
Refurbishments sometimes budget for new windows when the frames are sound and only the seal has failed. Sound frames often need only a new perimeter seal, which is a much smaller cost. If the frame is life-expired, we’ll tell you. Around Northiam, it’s better to renew all the failing joints at once. Send photos of each area and we’ll quote for the lot.
The specified product makes a difference, and so does the preparation. Access, phasing and site rules also count.
Why clients in Northiam choose us
- RAL and finish matching where the product range allows
- Joints cleaned back to sound surfaces
- Work carried out by CSCS-carded applicators
- Coloured sealants to suit the setting, where available
Read how commercial sealant jobs are priced and our accreditations and insurance.
When to call us in Northiam
A new building moves while it dries and settles. Materials lose construction moisture and shrink, which opens up internal joints, particularly where caulk has been used in a joint that moves. Picking a flexible sealant where there’s movement keeps snags down.
Most enquiries start with one or more of the following:
- Old sealant on a refurbishment that needs stripping before new work
- Cracks opening in caulked internal joints
- Oversized or tapered gaps around new frames
- Sanitary sealant damaged by following trades
Historic houses such as Great Dixter (to the west of Northiam) are a reminder of the older buildings in the wider area, where sealing against old stone, brick or timber needs compatible products.
Questions to ask before you book
- The terms of the workmanship guarantee
- Whether their applicators hold CSCS cards
- Can the work be phased to keep areas open?
- Proof of insurance