
Mastic sealant contractors in Magham Down
Planning work on a mastic joint in Magham Down? We assess it, carry out the work and guarantee our workmanship for 12 months.
- Window mastic that has split and shrunk
- Estate-wide sealant that is simply worn out
- No planned programme for sealant
Mastic sealing for Magham Down sites
Photos, a specification or a quick description of the joints is enough to start a fixed quote.
What happens if it’s left?
Leaving failed external joints lets water reach the structure behind. That can lead to damp, staining and damage to finishes, which is harder to deal with than resealing. Older rural buildings around Magham Down move with the seasons, and rigid or tired sealant can’t keep up. A sealant with the right movement capability, correctly sized, lasts far better.
The work involved drives the cost: removing old material, preparing the joints, the product, the access and how the work is phased. Call for a fixed quote.
Why us?
- 12-month guarantee on workmanship
- Over 20 years of commercial sealing
- Colour agreed before work starts
- Fixed quotes based on photographs, drawings or a visit
How we handle mastic sealing in Magham Down
There isn’t one mastic for every joint on a building. Window perimeters and external joints often take a low-modulus neutral-cure silicone, while hybrid polymer sealants grip many materials and are often paintable. We’ll confirm the colours available for the specified product. If you are dealing with no planned programme for sealant and movement joints with sealant missing, we can put it right, on window and door perimeters on blocks, shopfronts below residential blocks and communal entrances and stairwells alike. One point of contact handles commercial sealant work in Magham Down from the first photographs to the final walk-round, whether it’s one building or several.
Rural conversions near places like Magham Down often set modern frames into older stone, flint or brick. The mastic needs to suit an irregular masonry face and the look of the building.
Work we carry out in East Sussex comes with a 12-month guarantee. Should something we installed fail, speak to us on 01277 525 020 or use the quote form and we will come back to it.

- Place
- Magham Down (BN27)
- Region
- East Sussex
- Cover
- 12 months on every job
- Quotes
- A fixed quote before we start
- Call
- 01277 525 020
- Page updated
- 3 November 2026
Doing it in-house
Some joints are best left to specialists: for example fire-rated seals that must match a tested detail, trafficked floor joints and external movement joints. Getting these wrong usually costs more in the end than doing them right.
The visible bead is only part of the job. Correct depth, the right primer and a sealant matched to the movement are where general trades tend to cut corners.
On site: what to expect
Diagnose, treat, sign off: that’s the shape of every visit. We inspect the joints and confirm what’s in scope, then the work is carried out to the specified product and detail, and the job ends with a walk round and sign-off. For a building around Magham Down, tell us how to find it and who will meet us. Send that with the details and we’ll confirm the plan with the quote.
- First comes a look at the joints and, for older buildings, the asbestos records.
- A fixed quote covers the joints, products and order of work.
- Failed mastic is removed completely.
- The joints are prepared and resealed with the right product.
- Buildings are completed in turn.
Getting the site ready
- Warn occupants and staff about the work
- Agree which areas must stay open
- Arrange parking or a loading space
Getting a fixed quote
Send details, get a quote, we seal, guaranteed: that’s how every job runs. The first step is to call 01277 525 020 or email the details over with what you know.
Advice
Your questions answered
Is Magham Down off your patch?
Not at all: smaller places are covered as well as towns. We work across Greater London and the South East. Where we can, we group nearby jobs to make the most of each trip.
Will you take on a block within reach of Polegate station?
Yes, and several blocks can go on one quote. Give us the building’s details and say how residents are notified, and we’ll quote and plan to suit.
Which sealant will you use?
Where there’s a specification, we use the product it names. Otherwise, we recommend a product to suit the joint’s movement, the substrate and the conditions, following the manufacturer’s guidance.
Can you work to our specification?
Yes. Include it with the drawings when you ask for a quote, and we’ll price the work to it.
Do you guarantee the mastic work?
Every building we reseal has a 12-month guarantee. It covers our workmanship, not later building movement, damage or frame failures.
When is resealing likely to be due?
It depends on movement, UV and weather, cleaning, traffic and the product. Sealant joints are maintenance items, so inspect them regularly.
Do you check for asbestos in old sealant?
We don’t remove asbestos-containing materials. Anything suspect is tested before we carry on, and the duty to manage asbestos sits with the dutyholder.
How the job changes by surface
Planned maintenance
Planned resealing replaces emergency callouts and keeps budgets predictable.
External movement joints
Joint size and product are matched to the expected movement, often around 2:1 width to depth, as the manufacturer advises.
How the quote is worked out
The price varies from site to site. It mainly depends on:
- Quantities, in metres or numbers
- Travel to remote or island sites
- The size and state of each joint
- How much existing material needs removing
Quantities, awkward access and phased working all shape the price. Site requirements like inductions and permits play a part as well, along with the time of year for external work.
Before you send an enquiry
For an accurate fixed quote, we need a clear picture of the site. Send us:
- Approximate linear metres or a joint schedule
- The asbestos register, for older buildings
- Anything awkward about access or site hours
- Any dates the work must fit around
The quickest route to a quote is a few photos and the site postcode. Send them through the quote form, or give us a call on 01277 525 020 or use the quote form to discuss it first.
Nearby places to Magham Down
What else we do in Magham Down
Block-wide mastic in Magham Down
Magham Down is about 46 miles from central London. Managed blocks of flats are a big part of commuter-belt property, and window and balcony mastic on them tends to age at the same rate. Rainfall across the South East, Magham Down included, is lower than in many parts of the UK. External mastic still waits for dry faces and the right temperature, and elevations facing the sun and the prevailing weather are normally where frame mastic ages first.
If you own or manage units on a site such as Station Road Industrial Estate, 2.1 miles south-west of Magham Down, failed mastic on frames, door surrounds and external joints can be dealt with unit by unit. Site managers at schools like Hailsham Community College can fit frame mastic into the summer works.
Magham Down is about 2 miles north-east of Hailsham, in East Sussex. Commercial clients in Magham Down use us for work on mastic joints, as part of our coverage of East Sussex. Magham Down is one of 308 places we cover in East Sussex for mastic joints. For work in that direction, see our Brighton page, about 18 miles away.
Postcode districts covered here: BN27. Buildings on Old Road and Nodes Lane are within our area for mastic joints. Sites close to Magham Down are covered too, including Hellingly (1 mile west), Upper Horsebridge (1 mile west), Hailsham (2 miles south-west), Lower Horsebridge (2 miles west) and Tile Hurst (2 miles west). Bigger towns within reach include Eastbourne (7 miles south), Hastings (12 miles east), Bexhill-on-Sea (8 miles east), Seaford (11 miles south-west), Lewes (12 miles west) and Crowborough (13 miles north-west).
Near you in Magham Down
Magham Down’s nearest station is Polegate station, about 4.5 miles south-west of the centre. Well-known places in the area include Amberstone Hospital (0.5 miles west) and Herstmonceux Castle (2.4 miles east).
Do you need mastic sealing in Magham Down?
UV and rain age external sealant. The surface chalks, the body stiffens and cracks appear most of all on the sunniest and most exposed elevations.
Any of the following is a good reason to get the joints checked over:
- Draughts at frames across a block
- Communal area joints that look neglected
- Mastic failing across several blocks on an estate
- Water getting in round frames after rain
Older buildings near Magham Down, from historic houses such as Horselunges Manor, 1.7 miles to the west of Magham Down, to more modest stock, need compatible products when frames are resealed.
Before you book anyone
- Their approach to joint depth and backing
- Whether primer will be used where the manufacturer specifies it
- How long is the guarantee, and what does it include?
- Will CSCS-carded applicators be on site?