Mastic sealant contractors in Longwick
Mastic sealing in Longwick, backed by over 20 years in commercial sealing. Fully insured and CHAS accredited.
- Brittle perimeter mastic across a building
- Estate-wide sealant that is simply worn out
- Draught complaints from residents or tenants
Mastic sealing for Longwick sites
Share the site address and what’s failing, and we’ll reply with a fixed quote or arrange a visit.
How we handle mastic sealing in Longwick
Most buildings come with mastic joints nobody has looked at since handover and it slowly wears out: it sits round windows and doors, along external joints and through communal areas. Once it cracks, hardens or comes away, draughts and water find a way in along with complaints. We work on external wall and movement joints, communal kitchens and washrooms and balcony and threshold joints, and the failures we are asked to look at most are window mastic that has split and shrunk and no planned programme for sealant. Whoever orders the work in Longwick, the brief is normally the same: a clear scope, tidy work and joints that don’t fail again.
For landlords and associations with stock in and around Longwick, grouping buildings into one visit saves travel. One quote can cover a whole list of addresses.
Our workmanship is guaranteed for 12 months, wherever the site is. If our installation lets you down in that time, we return and fix it.
- Place
- Longwick (HP27)
- Wider area
- Buckinghamshire
- Cover
- A 12-month guarantee
- Quotes
- Quoted before any work starts
- Phone
- 01277 525 020
- Updated
- 3 November 2026
Frames, entrances and external joints in Longwick
Longwick is about 37 miles from central London. Managed blocks of flats are a big part of commuter-belt property. Rainfall across the South East, Longwick included, is lower than in many parts of the UK. Outside mastic still needs a dry joint and the right temperature, and south- and west-facing elevations, which take the most sun and rain, often age first.
Trustees of buildings like Owlswick Chapel can bring frame and external mastic into a planned maintenance list. Blocks of flats and mixed-use buildings often cluster around stations such as Monks Risborough station, 1.3 miles east of Longwick, and their window and balcony mastic tends to age at the same rate across a building. Site managers at schools like Longwick Church of England Combined School can fit frame mastic into the summer works.
Longwick is about 5 miles east of Thame, in Buckinghamshire. Businesses, contractors and managing agents in Longwick use us for work on mastic joints, as part of our coverage of Buckinghamshire. Longwick is one of 308 places we cover in Buckinghamshire. Sites around Oxford have their own page, roughly 16 miles from Longwick.
If you need mastic sealing in HP27, the process matches everywhere else we work: details, then a fixed price, then sealing and a 12-month guarantee. If your site is on Headland End, Wickfields and Furrow Drive or close by, send details and we will quote for mastic joints. Just outside Longwick, we also work in Owlswick (1 mile north), Alscot (1 mile east), Pitch Green (1 mile south-west), Ilmer (1 mile north-west) and Horsenden (1 mile south). Bigger towns within reach include Aylesbury (6 miles north), High Wycombe (9 miles south-east), Chesham (11 miles east), Marlow (12 miles south), Amersham (12 miles east) and Beaconsfield (13 miles south-east).
Around Longwick
Around Longwick, our work takes us to commercial buildings near Princes Risborough School and The Red Lion Public House, among other places. Longwick’s nearest station is Monks Risborough station, roughly 1.3 miles east. A little further out are Great Kimble Dial Hill (2.4 miles east) and St John's Hospital (4.6 miles north). Green spaces nearby include Brush Hill Local Nature Reserve and Beacon Hill.
When it isn’t the sealant
Some faults sit outside our scope, and we say so rather than covering them up:
- Old mastic suspected of containing asbestos, which must be tested and dealt with by a specialist first
- Substrate edges that need repairing first
- Broken glass or failed sealed units
If in doubt, speak to us on 01277 525 020 or send details through our quote form and we will say what we think before you book.
Where we work in Longwick
- Balcony and threshold joints
- Shopfronts below residential blocks
- Communal kitchens and washrooms
- Window and door perimeters on blocks
- Communal entrances and stairwells
- External wall and movement joints
Places near Longwick
More services for Longwick
FAQs: Longwick
Can one quote cover a number of our buildings near Longwick?
Yes, we quote for single buildings and for programmes across several blocks. Residents are given notice through you, and the work moves building by building.
Is a smaller place like Longwick outside your area?
Not at all: smaller places are covered as well as towns. We cover Greater London and the counties of the South East. Send photos and a list of what needs doing, and we will plan the job to need as few trips as possible.
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, because fresh silicone will not bond with aged silicone.
Do you work to architects’ specifications?
Yes. We follow the specification, along with the manufacturer’s installation guidance, and any queries are raised before we start.
Will residents or tenants be disturbed?
The work is planned around occupiers. Dates and areas are agreed with you so residents or tenants can be told, and entrances stay in use.
What if the old mastic contains asbestos?
Asbestos removal isn’t part of our work. Anything suspect is tested before we carry on in line with the dutyholder’s asbestos management.
How do you choose the sealant?
If the job is specified, we follow the specification. If not, we choose for the movement, the surfaces and the conditions, in line with the manufacturer’s guidance.
What affects the price in Longwick
These are the things that shape the price:
- Removal of failed or old sealant
- The size and state of each joint
- Distance, for remote addresses
- Phasing around occupants
Larger quantities, tricky access or phasing all shape the price. So do site requirements such as inductions and permits, along with the time of year for external work.
What to include in your enquiry
It doesn’t need to be a full survey. A few details are enough to get going:
- Approximate linear metres or a joint schedule
- Any specification or named product
- Clear photographs of the problem areas
- The postcode of the building
Pricing a project or setting a maintenance budget? Send the scope and any drawings, and we’ll return a fixed quote that you can work with. If you have questions first, phone 01277 525 020 or email us.
After the work
Keep the joints in good shape with a few simple steps:
- Mention RAMS, insurance or CSCS requirements up front
- Log resealing dates block by block
- Avoid piecemeal callouts where you can
- Make mastic part of routine maintenance checks
Add mastic joints to your cyclical inspections. Watch for splits, open gaps, hard or chalky surfaces and mastic pulling away and record where they are.
The longer failed joints are left, the more likely the substrate edges break up. Once that happens, repairs come before resealing.
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, primer goes on where the manufacturer specifies it, and each bead is tooled to a neat concave finish. Several jobs near Longwick can be grouped on one trip. Tell us your site hours and we will plan around them.
- We check the asbestos register for older buildings and look at the joints.
- The products and programme are set out in a fixed quote.
- We strip out the old sealant.
- The joints are prepared and resealed with the right product.
- We finish each building before moving to the next.
Preparing the site
- Clear stock, furniture or equipment away from the joints
- Point out parking and an unloading spot
- Have the specification and drawings to hand
Request a quote
The quickest route to a quote is a few photos and the site postcode. Send them through the quote form, or phone 01277 525 020 or email a schedule or drawings to discuss it first.
Related advice
Different surfaces, different methods
Tenement and older buildings
Older mastic can contain asbestos and the register is checked before anything is disturbed. Suspect material is tested before work continues.
Commercial and mixed-use buildings
Landlords with commercial portfolios have shopfronts, office entrances and external joints to look after. We work across portfolios on a planned basis.
Work for main contractors and building owners
We work for building owners and managing agents on everything from one building to a spread of sites around Longwick. Several sites can go on one quote, which keeps the paperwork simple.
Facilities managers want contractors who arrive with the paperwork sorted. Tell us what site paperwork you need, such as RAMS, an insurance certificate or CSCS details, and we’ll confirm with the quote.