East Sussex · England
New-build mastic & snagging in Offham, East Sussex
New build mastic across Offham and nearby, with every bit of old sealant taken out first and a 12-month guarantee.
- Gaps behind new kitchen upstands
- Frame joints opening as the plaster dries
- Joints pulling apart as timber shrinks
Offham questions
Do you cover smaller places like Offham?
Yes, Offham is covered. Our work covers London and the South East, from towns to the smallest places. Longer journeys are simply planned in advance.
Do you cover Offham for new build mastic?
Yes. Our work covers London and the South East, and Offham is part of that. You can ring 0345 464 0079 or drop us an email and let us know what needs doing.
Do you take out the old sealant first?
Always. Sealing over old sealant is the main reason resealing fails early, and it’s something we never do.
Are you insured?
Yes. Full insurance covers our work.
Can I send you my snagging list?
Yes. Photos of each sealant item help us quote. Items that need a plumber, tiler or the builder are flagged.
Which products do you use?
We choose the sealant for the joint, not the other way round. Movement, water and weather all affect the choice.
Can I add another job to the visit?
Of course. Doing several areas at once is usually more efficient.
Are you ARBOMaster approved?
Yes. Mr Mastic is an ARBOMaster approved applicator.
About our new build mastic in Offham
Dust is the enemy of new-build sealant. Each joint is cleaned of dust and primed where the product calls for it, so the new bead bonds properly rather than sitting on a layer of grit. We work on plot handovers, skirting & floors and bathrooms & en suites, and common reasons people get in touch are beads laid onto grit and dust from the build and sealant work across a run of new homes.
Older homes in small places like Offham often have timber floors that move with the seasons, which is why skirting and threshold joints need a flexible sealant, not filler.
A one-year guarantee comes as standard.
- Place
- Offham (BN7)
- Wider area
- East Sussex
- Guarantee
- One year on every job
- Price
- A clear quote up front
- Phone
- 0345 464 0079
- Page updated
- 26 October 2026
Places near Offham
What else we do in Offham
Honest limits
Sealant isn’t the answer to every problem, and we’d rather say so up front. Sealant will not put right:
- Damaged fittings that need replacing
- Movement caused by a poorly fitted tray or bath
- Disputes or warranty claims with your builder
If in doubt, call 0345 464 0079 or drop us an email and we’ll say what we think.
Where we work in Offham
- Kitchens
- Bathrooms & en suites
- Show homes
- Plot handovers
- Skirting & floors
- Windows & doors
How the job changes by surface
Skirting and floors
New homes often develop a gap between skirting and floor. A flexible sealant closes it without cracking like caulk.
Plot handovers
Developers can send the plot schedule and specification and we will quote. Sealant work across the plot is covered as agreed.
Keeping the joints in good condition
How long the joints last depends on use and care. We suggest:
- Keep water off fresh sealant until it has cured
- Resist patching a failed seal with a tube from the DIY shop
- Clean sealant with mild detergent, not abrasives
- Open a window or run the fan after bathing
Keep an eye on the joints over the first couple of years. Hairline gaps can open as timber and plaster dry, and they’re simple to reseal once movement has slowed.
Mould takes hold quickly in sealant that has gaps or lifted edges. Resealing before mould gets in saves a harder job later.
New homes and floors in Offham
Rainfall in the South East is lower than in much of the UK, yet outdoor joints still have to be sealed dry, so jobs are booked with the weather in mind.
In and around Offham, as anywhere, good new build mastic starts with a clean, dry, properly prepared joint.
Offham is about 1 mile north-west of Lewes, in East Sussex. We provide new build mastic to homeowners, landlords and businesses in Offham and the surrounding area. Offham is one of 289 towns and villages in East Sussex where we work for new build mastic. We also work in Brighton, about 7 miles from Offham.
Jobs for new build mastic in BN7 is quoted and booked the same way as anywhere else. If you’re just outside Offham, we cover Hamsey (1 mile north-east), Lewes (1 mile south-east), South Malling (1 mile south-east), Southover (2 miles south-east) and Cliffe (2 miles south-east). Within a short drive, we also cover Eastbourne (15 miles south-east), Seaford (10 miles south-east), Hailsham (12 miles east), Crowborough (14 miles north-east), Uckfield (7 miles north-east) and Newhaven (7 miles south).
Near you in Offham
Around Offham, our work takes us to homes and buildings near Railway Land, The Blacksmiths Arms and Lewes Old Grammar School and the streets around them. The nearest railway station is Cooksbridge station, roughly 0.9 miles north. Well-known places in the area include Brighton And Hove Albion Football Club Museum (3.8 miles south-west) and Lewes Castle (1.5 miles south-east). Green spaces nearby include Malling Down and Offham Hill.
Common problems we fix in Offham
Fresh sealant can be knocked or cut by trades finishing off. If it’s disturbed before curing, the joint can be left weak.
Keep an eye out for these signs:
- Shower seals failing in the first year or two
- Plot mastic for developers ahead of handover
- Cracks appearing as a new home settles
- Beads laid onto grit and dust from the build
If you’ve bought a new home near Cooksbridge station, the sealant around baths, showers and frames is worth checking in the first year or two.
What to look for in a quote
- How hidden problems are handled
- What product goes in the joint
- Whether VAT is included
- How long the guarantee is
What affects the quote in Offham
For a quick quote, just ask. The main things that affect it are:
- How much there is to do
- Any working-time requirements on site
- How many rooms, windows or areas are involved
- The type of sealant required
Combining jobs into one visit is normally more efficient than separate visits, so tell us about everything that needs sealing. You’ll get one clear quote for the whole job.
What we need to know
To make quoting easier, let us know:
- How we’d reach the joints
- The rough size of the job
- The address or postcode of the job
- A few pictures by email, if you can
Call for a quick quote, or send an email if you’d rather. Tell us about the joints that need doing and we’ll explain what’s involved.
Landlord and commercial work in Offham
Landlords and agents in Offham can book us as well as homeowners. Sealant work between tenants is a simple way to keep a property in good order.
If you manage several properties in or around Offham, several properties can be quoted together. Send us the addresses and the work at each.
The process
We keep the work tidy and contained to the joints we are treating, so you can get on with your day. The job usually takes anything from a few hours to several days, depending on the number of plots. For a village or hamlet like Offham, the journey is planned in advance: let us know about lanes, gates and parking. Everything for the job comes with us, so a second trip is avoided where possible.
- We go through the snagging list or plot schedule and agree the joints to do.
- The old bead comes out in full, with no layer left behind.
- We clean off dust from the build and prime the surfaces where the product needs it.
- We apply a sealant that suits each joint and tool it to a neat finish.
- Finally, each room is checked and you’re given the cure time.
How to prepare
- Tell us about any previous sealing or DIY attempts
- Tell us if parking is tricky
- Try not to wet indoor joints just before the visit
Get a quote
Every job is quoted individually. Simply ring 0345 464 0079 or drop us an email and describe the job and send pictures if you have them.