Mastic Sealing in Northease
Mastic sealing in Northease, backed by over 20 years in commercial sealing. Fully insured, with a 12-month guarantee.
- A mix of products and colours from past repairs
- Movement joints with sealant missing
- Worn sealant at communal door frames
Mastic sealing for Northease sites
Share the site address and what’s failing, and we’ll reply with a fixed quote or arrange a visit.
About our mastic sealing in Northease
Treatment starts with a proper look: which joints have failed, why, and whether sealant is the right answer. Old mastic is removed entirely, the faces prepared, primer used where the maker specifies it and new sealant tooled in, with backing rod setting the depth where it’s needed. We work on window and door perimeters on blocks, balcony and threshold joints and external wall and movement joints, and what we’re called in for most is window mastic that has split and shrunk and repeated reactive repairs to the same buildings. Whether you call it commercial sealant work, mastic application or joint sealing, the work in Northease is the same: failed joints cut out, faces prepared and the right sealant laid to the right depth.
For buildings around smaller places like Northease, we group work so one trip covers it. Photos of each elevation help us quote accurately.
The 12-month guarantee is for workmanship rather than wear and tear. Sealant wears with time, and movement, weather, cleaning and use decide how fast, so we are clear about what is covered before work starts.
- Place
- Northease (BN7)
- Region
- East Sussex
- Guarantee
- 12 months on our workmanship
- Quote
- Fixed quote, scope in writing
- Call
- 01277 525 020
- Last updated
- 3 November 2026
Doing it in-house
For a quick touch-up, site staff may be fine, but larger jobs are different: a specialist works through quantities efficiently, leaves a consistent finish and backs it with a 12-month guarantee.
For most general trades, sealant is a sideline. A specialist brings correct preparation, depth control with backing rod and a product suited to that particular joint, which is what makes a joint last.
More services for Northease
Signs you need mastic sealing in Northease
Topping up old mastic is a common shortcut. New silicone has nothing to grip on old silicone and the repair soon fails.
What tends to prompt an enquiry:
- Complaints coming in block by block
- Cracked, hardened mastic round windows on a block
- Leaks at window and door perimeters
- Damaged joints in communal entrances and corridors
If you manage student housing near a university such as University of Brighton, which lies south-east of Northease, the summer turnaround is the time for mastic.
What your quote should include
- The terms of the workmanship guarantee
- Will failed sealant be removed rather than covered?
- Will RAMS and insurance details be available?
- Is depth set with backing rod, or bond-breaker tape in shallow joints?
Why it’s worth doing now in Northease
Reacting to every complaint means sending someone out block by block. Planned resealing covers a whole building or estate in one go, under a single quote and a single programme. Around Northease, it’s better to renew all the failing joints at once, rather than one at a time. Send photos of each area and we’ll quote for the lot.
Access can matter as much as the joints themselves: easy-to-reach joints are quicker than those that need equipment to get to. Mention the access as part of your enquiry.
Why us?
- Fixed quotes based on photographs, drawings or a visit
- One contact handling all your sites
- A Constructionline member, so easy to vet
- Work to your specification and the manufacturer’s guidance
Read our cost guide or how we’re accredited.
When it isn’t the sealant
Some faults sit outside our scope, and we say so rather than covering them up:
- Leaks from above rather than through a joint
- Broken glass or failed sealed units
- Asbestos-containing sealant, which we don’t remove
If in doubt, give us a call on 01277 525 020 or email the details over and we will say what we think.
Surfaces we seal
- External wall and movement joints
- Communal kitchens and washrooms
- Balcony and threshold joints
- Communal entrances and stairwells
- Window and door perimeters on blocks
- Shopfronts below residential blocks
Looking after buildings in and around Northease
Northease is in the South East, one of the UK’s drier regions. Even so, frame mastic only goes on in dry, workable conditions, and south- and west-facing elevations, which take the most sun and rain, often age first. Northease is about 46 miles from central London. Around the capital’s commuter belt, managing agents look after many blocks close to stations and town centres.
If you’re responsible for a building such as St Peter's Church, frame and door mastic needs the same attention as any other property. For a school such as Priory School, perimeter mastic on windows and doors is a holiday job.
Northease is about 3 miles south of Lewes, in East Sussex. We cover commercial sites throughout Northease. Across East Sussex, 308 places are covered, Northease among them. For work in that direction, see our Brighton page, about 6 miles away.
We take on mastic joints across the BN7 postcode area, whatever the building. Sites close to Northease are covered too, including 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). Nearby towns on our patch include 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).
Near you in Northease
Locally, jobs take us to sites close to Lewes and Laughton Levels and the streets around them. Northease’s nearest station is Southease station, roughly 1.4 miles south-east of the centre. Nearby you’ll 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.
How a job runs
Site rules come first: sign-in, induction and whatever permit system the building uses. Once we are cleared to begin, the joints are worked through in the order agreed with your site contact. For work around Northease, we aim to finish in one visit, so we ask for photographs and rough sizes first. That way the right products come on the day.
- A building-by-building inspection lists the failed joints.
- The quote is fixed and split as suits you.
- We agree the programme and dates with you.
- Failed sealant is removed and the faces prepared.
- New sealant goes in with backing rod and primer where needed.
- We check the finished work and confirm the guarantee.
What we need from you
- Tell us what induction or permit system the site runs
- Let building users know which areas are affected
- For older buildings, check the asbestos register before work
Quotes
Send details, get a quote, we seal, guaranteed: that’s how every job runs. To take the first step, phone 01277 525 020 or use the quote form.
Read more
Your questions answered
Can you work at a site such as Cliffe Industrial Estate, by Northease?
Yes. We cover Northease and the area around it, including industrial estates, business parks and retail parks such as Cliffe Industrial Estate. Photos and a short description are enough for a first look.
Is Northease too far out for you?
Not at all: smaller places are covered as well as towns. We cover Greater London and the counties of the South East. We plan jobs in smaller places so return trips are kept to a minimum.
Is it fine to apply new sealant on top of old?
No. We cut the old material out and clean the joint back before sealing, since fresh sealant will not bond reliably to aged material.
How long do sealant joints last?
There isn’t a single answer, because life depends on how much the joint moves, how exposed it is and how it’s cleaned and used. Regular inspection is the best way to catch problems early.
Can you work to our specification?
Yes. Send it with your enquiry, and we will price the work to it.
Do you do block-wide mastic programmes?
Yes, planned programmes suit estates and portfolios. The quote can be split however suits your budgeting.
Which sealant will you use?
The specification comes first, if there is one. If there isn’t one, it comes down to the joint: its movement, its surfaces and what it has to cope with.
Keeping the joints sound
A few simple habits keep the new joints working:
- Make it easy for occupiers to report draughts
- Check sealant joints during planned building inspections
- Plan resealing building by building rather than complaint by complaint
- Have the asbestos survey to hand for older buildings
Where a paintable product was specified, it can be painted after curing. Non-paintable silicone shouldn’t be painted over unless told otherwise.
Joints on a building age together, so it pays to look at the whole elevation. A planned reseal saves repeated visits.