Greater London · England
Commercial sealant contractors in SE28
Commercial sealant, construction mastic and joint sealing across SE28, from Thamesmead, Plumstead and Crossness, with a fixed quote before we start.
Mastic and sealant across SE28
Share the site address and what’s failing, and we’ll reply with a fixed quote or arrange a visit.
Areas within SE28
Sealant work we offer in SE28
- Coloured and colour-matched sealant
- Mastic sealing for building owners and managing agents
- Expansion and movement joint sealing
- Commercial sealant contractors
- Facade and window perimeter sealing
- Industrial and floor joint sealing
- Commercial washroom and wet-area sealing
- Construction and new-build mastic
- Fire-rated sealing and fire stopping
- See all services
Tell us what needs doing and your postcode for a fixed quote: call the office on 01277 525 020 or send details through our quote form.
Commercial sealant contractors across SE28: what to expect
On a commercial site, sealant turns up in more places than people expect: around sanitaryware, along worktops and splashbacks, at window boards, partition heads and floor junctions. Externally it keeps rain out of frame perimeters, panel joints and movement joints. We deal with internal and external sealant joints alike. Most enquiries involve greasy, split joints in a kitchen or tea point and sanitary sealant that has gone black and patchy, across movement joints in walls and floors, kitchen worktops and splashbacks and window and door perimeters.
A typical day starts with protection: masking tape along the joint edges and sheeting over anything nearby. On site, the work normally takes a few hours for one area, or a planned series of visits across a bigger building, and our waste is bagged and taken away as we go.
- First, details reach us through the quote form or a site visit.
- We diagnose the cause of failure and price a fixed scope.
- Where parts of the building must stay open, the work is phased.
- Every failed bead is removed rather than covered.
- A suitable product for each joint goes in at the right depth and is tooled.
- We check the work with you, and the 12-month guarantee starts.
What affects the price in SE28
A quote for sealant joints depends on quantities, condition and access. Call for a quote.
Why choose Mastic Doctor
- 12-month guarantee on workmanship
- RAL and finish matching where the product range allows
- Coloured sealants to suit the setting, where available
- Fully insured
Getting a fixed quote
Quotes are fixed against the scope you send, so the cost is agreed before work starts. To ask for one, speak to us on 01277 525 020 or email drawings and photos.
Around Thamesmead
Recent enquiries here include premises near Jubilee Primary School, Harris Garrard Academy and St Paul and the streets around them. The closest station to Thamesmead is Abbey Wood station, about 1 mile south. Well-known places in the area include Greenwich Borough Museum (1.7 miles south-west) and Gallions Reach Shopping Park (2 miles west). Not far away are Crossness Nature Reserve.
Commercial sealant contractors across SE28: the area picture
Commercial buildings across SE28 range from older premises altered many times to recent units on business parks. Each building needs the right product for its surfaces, from stone and brick to coated aluminium and laminate.
Around the motorway corridors of the South East, business parks and industrial estates are common, and we cover SE28 along with the rest of the region.
Thamesmead: Sites a few miles apart, such as Kencot Close Business Park and ISIS Reach Industrial Estate, can share one programme and one point of contact. Units at places like Gallions Reach Shopping Park, 2 miles west of Thamesmead, are refitted as brands change, and the joints have to suit each new scheme.
Honest limits
We check first that sealant really is the fix. It isn’t the answer for:
- Faulty windows rather than failed perimeter sealant
- Suspect materials that need testing and specialist removal
- Walls or slabs moving more than any sealant can take
When to bring in a specialist
For most general trades, sealant is a sideline. A specialist prepares properly, controls joint depth and picks a product with the right movement class.
Putting right a botched joint often costs more than sealing it well at the start, since all of it has to come out and the faces be cleaned back again. That’s why many clients bring in a specialist from the beginning.
Work for main contractors and building owners
Blocks and communal areas make up much of the work for housing associations and agents. We phase the work so people keep access, with each stage agreed with your site contact.
Agents, factors and owners’ representatives all follow the same route: send the details, accept a fixed quote, and we carry out and guarantee the work. Keys, access and contacts can be agreed in advance.
How the job changes by surface
Facade and cladding joints
Panel joints on cladding and rendered facades open and close with the temperature. The product has to suit the movement, and the depth has to be controlled with backing. Access, such as scaffold already up, is agreed before the price is fixed.
Window and door perimeters
Internally, window boards and frame edges often have decorators’ caulk or silicone that has cracked. We use a paintable product where decorating follows and a silicone where it doesn’t.
Leave it or put it right?
Reactive resealing, a leak at a time, tends to cost more overall than a plan. A planned programme groups work by building or area, cuts repeat visits and gives you a budget figure. We can help you prioritise, starting with the joints most likely to let water in.
Comparing quotes
- Will failed sealant be removed rather than covered?
- Their public liability cover
- How the joint faces will be prepared and primed
- How joint depth will be controlled
Common questions from SE28 clients
How long will the new sealant last?
There’s no fixed lifespan: movement, exposure, cleaning, traffic and the product all play a part. Sealant joints are maintenance items, so inspect them regularly.
What site paperwork can you provide?
We confirm documents at quote stage: most clients ask for RAMS, our insurance certificate and CSCS details. Every applicator holds a CSCS card.
Can you take on work for an FM or managing agent?
Yes, and through main contractors too. We quote, schedule and report back in the way that suits your process.
Is it OK to apply fresh sealant over existing beads?
Removal of the failed sealant is always part of the job. Laying new silicone on old gives it nothing to grip; the faces are then cleaned and prepared.
What do you need from us to quote?
Send photos, drawings or a list of locations through our quote form. If a visit is needed we will book one, and a fixed quote follows.
Do you take on multi-site sealant work?
Yes, within the areas we cover: South East England, Greater London and Scotland. Each site gets the same process and a single contact.
Is SE28 in your area?
Yes. We take on work across SE28, with one number for every area we cover.