Longcross mastic sealing
Mastic sealing for building owners, managing agents and housing associations in Longcross and across Surrey. CHAS accredited, Constructionline member, with a 12-month guarantee on workmanship.
- Leaks at window and door perimeters
- Repeated reactive repairs to the same buildings
- Mastic failing across several blocks on an estate
Mastic sealing for Longcross sites
Send drawings, photos or a joint schedule, or tell us about the site, and we’ll come back with a fixed quote.
Doing it in-house
Certain joints really need a specialist: for instance fire-rated seals that must match a tested detail, trafficked floor joints and external movement joints. Getting these wrong typically costs more in the end than doing them right.
Paperwork matters too. Many sites expect CSCS cards, RAMS and proof of insurance, and we’ll confirm the paperwork you need with the quote.
About our mastic sealing in Longcross
For over 20 years we have resealed joints for owners, agents and landlords. Our applicators are CSCS-carded, and the work is backed by public liability insurance. Resealed mastic joints in Longcross carry our 12-month guarantee. Most enquiries involve failed external movement joints and repeated reactive repairs to the same buildings, across window and door perimeters on blocks, communal entrances and stairwells and communal kitchens and washrooms. Facilities teams, main contractors and managing agents in Longcross tend to want the same three things: a fixed quote, no surprises on site and a 12-month guarantee behind the result.
For buildings around smaller places like Longcross, we group work so one trip covers it. Photos of each elevation help us quote accurately.
Every job ends the same way: guaranteed. You get a 12-month guarantee on our workmanship, and we explain exactly what that covers when we quote.
- Location
- Longcross (KT16)
- Region
- Surrey
- Cover
- A 12-month guarantee
- Price
- Fixed quote, scope in writing
- Phone
- 01277 525 020
- Last updated
- 3 November 2026
For owners and agents in Longcross
Central London is about 23 miles from Longcross. Commuter-belt towns tend to have plenty of managed blocks near stations and town centres; their frame mastic often ages block-wide. Rainfall across the South East, Longcross included, is lower than in many parts of the UK. External mastic still waits for dry faces and the right temperature, while the elevations that take the most sun tend to show hardened mastic first.
Trustees of buildings like Longcross Church can bring frame and external mastic into a planned maintenance list. With historic buildings such as Botleys Mansion (to the east of Longcross) in the wider area, owners of older properties around Longcross should expect mastic to need a product that suits old masonry. If you own or manage units on a site such as Hersham Farm Business Park (1.2 miles east of Longcross), failed mastic on frames, door surrounds and external joints can be dealt with unit by unit.
Longcross is about 4 miles south-west of Egham, in Surrey. Anywhere in KT16, it works the same way: send details, get a fixed quote, we seal, and the work is guaranteed. Longcross is one of 379 places in Surrey on our list. Our Reading page has more on work in that area, about 18 miles away.
Work on mastic joints is covered throughout KT16. If your site is on Longcross Road, Tanglewood Close and Albury Close or close by, send details and we will quote for mastic joints. We also cover Trumps Green (1 mile north-east), Stonehill (1 mile south-east), Lyne (2 miles east), Mimbridge (3 miles south) and Ottershaw (3 miles south-east) for mastic joints. Bigger towns within reach include Guildford (9 miles south), Woking (4 miles south), Camberley (7 miles south-west), Epsom (14 miles east), Farnham (15 miles south-west) and Ewell (14 miles east).
Around Longcross
Recent enquiries here include premises near Gracious Pond and the streets around them. The closest station to Longcross is Longcross station, roughly 0.6 miles north-west. A little further out are St. Peter's Hospital (2.6 miles east) and Chobham Museum (2.2 miles south). Green spaces nearby include Virginia Water Lake and St Ann's Hill.
Other services in Longcross
Why act early in Longcross
Leaving failed external joints lets water reach the structure behind. That can lead to damp, staining and damage to finishes and those cost far more to put right. Around Longcross, it’s better to renew all the failing joints at once. Photos of every joint help us quote for the whole job.
The product called for affects the cost, as does the preparation each joint needs. Access, phasing and site requirements come into it too.
What you get with us
- Old sealant cut out, never sealed over
- Clear, fixed quotes
- Public liability insurance in place
- One number for every site we cover
Read our cost guide or our accreditations.
What affects the price in Longcross
Your fixed quote is built from the real scope. It takes account of:
- The product specified
- Joint width, depth and condition
- Access and working height
- Whether old sealant has to be cut out first
Quantities, awkward access and phased working all shape the price. So do site requirements such as inductions and permits, along with the time of year for external work.
Sending details for a quote
For an accurate fixed quote, we need a clear picture of the site. Useful things to include:
- Access details, including height
- Photos of the joints, close up and from further back
- Any dates the work must fit around
- Drawings or a marked-up plan, if available
Every job follows the same four steps: send details, get a quote, we seal, guaranteed. To take the first step, call 01277 525 020 or email drawings and photos.
What we can’t put right
A proper diagnosis includes knowing what sealant can’t do. We’ll tell you if the real problem is one of these:
- Old mastic suspected of containing asbestos, which must be tested and dealt with by a specialist first
- Glazing that needs replacing
- Masonry that has broken away beside the joint
Not sure which it is? You can call 01277 525 020 or email us and we will tell you honestly.
Joints and surfaces we work on
- Communal entrances and stairwells
- Communal kitchens and washrooms
- Balcony and threshold joints
- Window and door perimeters on blocks
- External wall and movement joints
- Shopfronts below residential blocks
Your questions answered
Will you take on a block within reach of Longcross station?
Yes, and several blocks can go on one quote. Photos of each elevation help us quote accurately.
Is Hersham Farm Business Park, near Longcross, within your area?
Yes. We cover Longcross and the area around it, including industrial estates, business parks and retail parks such as Hersham Farm Business Park. A few photographs and the unit address let us price the work.
Can you send RAMS and CSCS details before starting?
Let us know your requirements: tell us what site paperwork you need (RAMS, insurance certificate, CSCS details) and we’ll confirm with the quote. We are CHAS accredited and a Constructionline member.
How long will the new sealant last?
Nobody can honestly give a figure in years, because life depends on how much the joint moves, how exposed it is and how it’s cleaned and used. Regular checks let you plan resealing before leaks or damage.
Can you take on resealing for a block portfolio?
Yes, that’s exactly who this service is for. We work through buildings in a planned order so you can plan around it.
Does the weather affect the work?
Outside, yes. Sealant needs a dry joint and a temperature within the product’s range, so frost, rain or cold mornings can delay outside work. Internal work is rarely affected.
Do you work to architects’ specifications?
Yes. We follow the specification, along with the manufacturer’s installation guidance, and we raise anything unclear before work begins.
Building owners, agents and FMs in Longcross
When you manage a building on behalf of an owner, clear figures and clear communication matter. You get a fixed quote, an agreed scope and a walk round at the end, plus a 12-month guarantee.
FMs need a contractor who is easy to get on site. Tell us what site paperwork you need, such as RAMS, an insurance certificate or CSCS details, and we will confirm with the quote.
From enquiry to sign-off
Our CSCS-carded applicators arrive with the sealants, primers and backing rod the job calls for. Any old material is cut back to clean, sound faces, the manufacturer’s primer is applied where it’s called for, and each bead is tooled to a neat concave finish. For a building around Longcross, tell us how to find it and who will meet us. Send that with the details and we will confirm the plan with the quote.
- A building-by-building inspection lists the failed joints.
- You get a fixed quote, per block or for the whole programme.
- We agree the programme and dates with you.
- Old mastic is removed and the joint faces prepared.
- New sealant goes in with backing rod and primer where needed.
- We check the finished work and confirm the guarantee.
Getting the site ready
- Tell us what induction or permit system the site runs
- Point out any areas we must not close
- Warn occupants and staff about the work
Quotes
To get a fixed quote, call 01277 525 020 or email drawings and photos with the site address and an outline of the work. You can also send details through our quote form.