Mastic sealant contractors in Penge
Commercial sealant work in Penge for contractors, FMs and building owners: mastic sealing for building owners, managing agents and housing associations, quoted at a fixed price.
- Window mastic that has split and shrunk
- Draught complaints from residents or tenants
- Failed external movement joints
Need mastic sealing in Penge?
Tell us what needs sealing and where, with photos or drawings if you have them, and we’ll price it.
Mastic sealing in Penge, done properly
For blocks and buildings in Penge and across Greater London, the process is the same: you send details, we return a fixed quote, the joints are resealed and the 12-month guarantee follows. A list of buildings, a few photographs and approximate joint numbers are enough for a quick quote, and site visits can be arranged. We work on balcony and threshold joints, communal entrances and stairwells and shopfronts below residential blocks, and what we’re called in for most is damp patches beside frames and a mix of products and colours from past repairs. Searching for sealant specialists in Penge? We have been sealing commercial buildings since 2005.
Across Greater London, Penge included, the ULEZ applies, and parking and loading rules differ from street to street. For a block or estate, it helps to know where we can park and stage materials.
The 12-month guarantee covers our workmanship: the preparation, the sealing and the tooling. It doesn’t extend to damage, other trades’ later work or movement the joint was never designed to take.
- Where
- Penge (SE20, SE19, SE26)
- Region
- Greater London
- Cover
- A 12-month guarantee
- Quotes
- Fixed quote, scope in writing
- Telephone
- 01277 525 020
- Updated
- 3 November 2026
Diagnose, treat, 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 the sealant is tooled off neatly. Planning a London job such as one in Penge starts with access. Send the building rules and access times with your enquiry.
- We inspect the joints, building by building, and record what has failed and why.
- You get a fixed quote, priced per building where that helps your budgeting.
- The sequence and the dates are fixed with you, giving you what you need to notify occupiers.
- Old sealant is stripped and each face prepared back to firm material.
- Backing rod and primer go in as the joint requires, then the new bead is placed and tooled.
- Completed joints are inspected and carry a 12-month workmanship guarantee.
Preparing the site
- Move anything stored against the joints
- Flag any permit to work we will need
- Agree which areas must stay open
Request a quote
The quickest route to a quote is a few photos and the site postcode. Send them through the quote form, or call 01277 525 020 or email a schedule or drawings if you’d rather talk the job through.
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Nearby places to Penge
Other services in Penge
Cost factors for mastic joints
What shapes the price:
- Whether old sealant has to be cut out first
- Distance, for remote addresses
- The product specified
- Access and working height
Access often affects the price as much as the sealing: easy-to-reach joints are quicker than those that need equipment to get to. Mention the access as part of your enquiry.
What to include in your enquiry
To price the job accurately, we need to understand the site. Useful things to include:
- Clear photos of the problem areas
- Anything awkward about access or site hours
- Specification clauses that apply
- Your programme or deadline
Pricing a project or setting a maintenance budget? Send the scope and any drawings, and we’ll return a fixed quote you can plan around. For a chat about it beforehand, call the office on 01277 525 020 or email the details over.
Different surfaces, different methods
Estate-wide resealing programmes
Housing associations and agents often manage many similar blocks. We quote building by building and work through them in turn.
Window and door perimeters on blocks
Blocks have a mix of frame materials, and the product is matched to the frame material and the masonry. We’ll confirm the colours available for the specified product.
FAQs: Penge
Do you work in London buildings with loading restrictions?
Yes. Inductions, permits and timed loading are routine for us in London. Send the building rules and access times with your enquiry. All of Greater London is inside the ULEZ, and our planning allows for it
Is Franklin Industrial Estate, near Penge, within your area?
Yes. We cover Penge and the area around it, including industrial estates, business parks and retail parks such as Franklin Industrial Estate. A few photos and the unit address let us price the work.
Is any job too small?
Single areas, one-off repairs and whole buildings are all quoted the same way: send details, get a fixed quote, we seal, guaranteed.
What do you charge?
We don’t publish prices, as every site differs. Send photographs or drawings and we’ll price it at a fixed figure.
Can you seal joints high up on a block?
Every block is different. We agree access with you at quote stage so there are no surprises.
What’s the quickest route to a quote?
You can use the quote form on this site; alternatively, speak to us on 01277 525 020 or email drawings and photos. Include photographs or drawings if you have them.
Do you cover Penge?
Yes. We cover Penge, and you can call the office on 01277 525 020 or email us to get started.
Planned mastic for Penge portfolios
Blocks in London are normally run by managing agents, landlords or housing associations, with residents to notify and access to arrange. We work to your notice and access plan. There are four care or nursing homes within about 2 miles of Penge. Owners of care premises can bring window and door mastic into a phased programme planned around the home.
If you look after a block within reach of Penge West station (less than half a mile north of Penge), frame and balcony mastic can be renewed on one programme. If your remit includes a building such as Harris Primary Academy Crystal Palace, frame and door mastic can be programmed for the holidays. Property owners at sites such as Franklin Industrial Estate, less than half a mile south-east of Penge, can have mastic renewed between lettings.
Penge is about 1 mile west of Beckenham, in Greater London. Any commercial site in Penge is covered. Penge is one of 764 places we cover in Greater London. We also cover London, around 6 miles from Penge.
We take on mastic joints across the SE20, SE19 and SE26 postcode area. If your site is on High Street, Anerley Station Road and Station Road or close by, we can quote for mastic joints. You will find Penge on or near the A234, so getting applicators and materials to site is simple. Close to Penge, our area also takes in Anerley (1 mile west), Crystal Palace (1 mile north-west), Sydenham (1 mile north), Gipsy Hill (1 mile north-west) and Upper Norwood (1 mile west). A short drive away, we cover London (6 miles north), City of Westminster (8 miles north-west), Marylebone (8 miles north-west), Kensington (8 miles north-west), St Pancras (8 miles north) and Shoreditch (8 miles north).
Landmarks near Penge
Around Penge, our work takes us to commercial buildings near Crystal Palace School, Crooked Billet pub and Crystal Palace Dinosaurs, among other places. There’s a railway station in Penge itself: Penge West station. Well-known places in the area include St Christopher's Hospice (0.5 miles north) and Crystal Palace Museum (0.8 miles north-west). Green spaces nearby include Dulwich Upper Wood and Knight's Hill.
When it isn’t the sealant
Part of a good diagnosis is knowing where sealant stops. You’ll hear from us if the cause turns out to be one of these:
- Old mastic suspected of containing asbestos, which must be tested and dealt with by a specialist first
- Broken glass or failed sealed units
- Roof leaks, gutters or failed flashings that aren’t sealant joints
Not sure which it is? You can phone 01277 525 020 or email us and we’ll tell you honestly.
Joints and surfaces we work on
- Window and door perimeters on blocks
- Shopfronts below residential blocks
- Balcony and threshold joints
- Communal entrances and stairwells
- Communal kitchens and washrooms
- External wall and movement joints
Why deal with it now?
Dealing with failed joints one report at a time is slow and scattered. Planned resealing covers a whole building or estate in one go, under a single quote and a single programme. Getting scaffold, permits or access booked in Penge takes effort, so it makes sense to deal with every failing joint while access is in place.
Cost follows what’s involved: removing old material, preparing the joints, the product, the access and how the work is phased. Call for a quote and we’ll explain how it’s made up.
Why clients in Penge choose us
- CHAS accredited
- Coloured sealants to suit the setting, where available
- Fully insured
- Workmanship guaranteed for 12 months
Read what affects the cost and our accreditations and insurance.
For managing agents and facilities managers
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’ll confirm with the quote.
Hospitality, education, healthcare, office and retail clients come to us directly as well. We plan around the way the building is used, so the building keeps working while we do.