Fortis Green construction mastic
Commercial sealant work in Fortis Green for contractors, FMs and building owners: mastic packages for new-build and refurbishment projects, quoted at a fixed price.
- Sealant knocked or painted over by other trades
- New external sealant already peeling away
- Existing joints on a refurb that need cutting out and resealing
Construction mastic for Fortis Green sites
Send drawings, photos or a joint schedule, or tell us about the site, and we’ll come back with a fixed quote.
Commercial clients in Fortis Green
Blocks and communal areas make up much of the work for housing associations and agents. We phase the work so people keep access, and each stage is agreed with your contact.
When you manage a building on behalf of an owner, clear figures and clear communication matter. We quote a fixed sum, confirm the scope and walk the finished work with you or your representative.
Construction mastic in Fortis Green
Site managers want applicators who turn up with the right cards and paperwork. Our applicators are CSCS-carded, and we’re CHAS accredited and a Constructionline member. Tell us what site paperwork you need (RAMS, insurance certificate, CSCS details) and we’ll confirm with the quote. We work on window and door perimeters, brick and block movement joints and cladding and panel joints, and what we’re called in for most is different trades sealing to different standards and cracks opening in caulked internal joints. Looking for mastic applicators who cover Fortis Green? We’ve been sealing commercial buildings since 2005, CHAS accredited and a Constructionline member.
Construction in a London area such as Fortis Green means working on constrained sites: small compounds, delivery slots and shared hoists and scaffold. Mastic is typically one of the last trades on each elevation or floor, so we keep to the programme and the order of trades the site sets.
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
- Fortis Green (N10, N2, N6)
- Region
- Greater London
- Cover
- A 12-month guarantee
- Quote
- Fixed quote, scope in writing
- Call
- 01277 525 020
- Page updated
- 3 November 2026
Towns and villages near Fortis Green
Also in Fortis Green
Why deal with it now?
Refurbishments sometimes budget for new windows when the frames are sound and only the seal has failed. If the frame is in good order, cutting out and resealing the perimeter can be all it needs and that’s a far smaller job. If the frame is life-expired, we will tell you. In a London building, a failed joint rarely affects only one party. Dealing with it early is simpler for everyone.
The product called for affects the cost, and so does the preparation, from cutting out to priming and backing rod. Access, phasing and site requirements come into it too.
Why choose Mastic Doctor in Fortis Green
- 12-month guarantee on workmanship
- Fully insured, including public liability cover
- Failed material removed, not covered up
- A fixed quote before work starts
Take a look at what affects the cost or our accreditations.
How the quote is worked out
A fixed quote reflects the actual work. It takes account of:
- Travel to remote or island sites
- Site requirements such as inductions and permits
- Any access equipment needed
- Specialist products, such as fire-rated or hygienic sealants
We don’t publish prices, since every building and every scope is different. Call for a quote.
Before you send an enquiry
However big the job, the same details help:
- Access details, including height
- Whether the building will be occupied during the work
- Asbestos survey details if the building is older
- Any dates the work must fit around
Every job follows the same four steps: send details, get a quote, we seal, guaranteed. To take the first step, phone 01277 525 020 or use the quote form.
What the job involves on each surface
Window and door perimeters
Inside, a paintable sealant or decorators’ caulk is used where the joint doesn’t move much. We follow what’s specified, and colour-matched products can be used where the frame is on show.
Kitchens and utility areas
Worktop upstands, sinks and splashbacks are sealed once the kitchen is fitted. The sealant is a kitchen-grade product and hygienic or food-safe grades wherever food contact is possible.
Your questions answered
Can you work around term dates at a campus such as American University in London?
Yes. Education sites typically want the work in vacations or in phases during term, and we plan to suit. Any paperwork you need, from RAMS to our insurance certificate and CSCS details, is confirmed with the quote.
Is Friern Bridge Retail Park, near Fortis Green, within your area?
Yes, sites like Friern Bridge Retail Park are within our area, along with the rest of Fortis Green. A few photos and the unit address let us price the work.
How long will the new sealant last?
There isn’t a single answer, since movement, weather, cleaning and use all affect it. Regular checks let you plan resealing before leaks or damage.
Can you come in just for snagging?
Yes. Snag-only work is something we take on and damaged joints are redone properly.
What hours do you work?
We’re in the office from 8am until 5pm, Monday to Friday. Let us know your site hours and access windows, and the work will be planned around them.
What about RAMS and site documents?
Requirements differ from site to site, so tell us what you need and we’ll confirm it when we quote.
Do you need to see the site first?
Photos, drawings or a schedule are often enough to quote. If the job needs a look first, we will arrange a visit.
What we can’t put right
Some faults sit outside our scope, and we say so rather than covering them up:
- Specifying the product where the designer hasn’t
- Deciding which fire-stopping product a penetration needs
- Rework caused by others damaging completed areas
If you’re not sure, just call 01277 525 020 or use the quote form and we’ll give you a straight answer before you book.
What we seal
- Sanitary and kitchen joints
- Window and door perimeters
- Internal decorators’ caulk
- Brick and block movement joints
- Cladding and panel joints
- Floor and skirting junctions
Our process
Working in a building that stays open takes some planning. The work area is signed and kept contained, with routes through the building left open and work section by section so the rest of the building stays in use. For a job in Fortis Green, access comes first. Give us the hours we can be on site and we will schedule to suit.
- First we look at the scope on site or from drawings.
- A fixed quote sets out scope, products and phasing.
- Paperwork is agreed and applicators are inducted on site.
- We seal plot by plot or floor by floor in line with the programme.
- Problems we find, such as oversized gaps, are raised right away.
- The package is closed out, snags cleared and backed by our 12-month guarantee.
Preparing the site
- Tell staff and tenants when we will be in
- Explain the parking and delivery arrangements
- Have the specification and drawings to hand
Request a quote
If there’s a specification, drawings or a tender package, send it with your enquiry, and we’ll price against exactly what is specified. For smaller jobs, photographs and a description will do.
Advice
Building and refurbishing in Fortis Green
As part of Greater London, Fortis Green is inside the ULEZ, which applies to every van on site. Deliveries are booked and storage is tight, so mastic materials come in as needed. There are a good number of hotels within about 2 miles of Fortis Green. Hotel schemes tend to have fixed reopening dates, so the mastic is programmed tightly with the other trades.
New units and refits on sites such as Friern Bridge Retail Park, 1.4 miles north of Fortis Green, need their panel and perimeter joints sealed to the specification. University estates such as American University in London (to the south-east of Fortis Green) tend to have a rolling programme of new buildings and refurbishments, each with window perimeters and facade joints to seal. Further education sites such as St. Giles College (1.1 miles south-east of Fortis Green) are extended and refurbished from time to time, with mastic often programmed into the summer break.
Fortis Green is about 1 mile south-east of Finchley, in Greater London. Businesses, contractors and managing agents in Fortis Green use us for work on mastic packages. We work across 764 places in Greater London, from busy centres to rural villages. For work in that direction, see our London page.
Anyone looking for construction mastic in N10, N2 and N6 gets the same process as the rest of our area: details, then a fixed price, then sealing and a 12-month guarantee. If your site is on Hill Road, Durham Road and Steeds Road or close by, we can quote for mastic packages. Fortis Green sits on or close to the A504, useful when we plan access and materials. Close to Fortis Green, our area also takes in Muswell Hill (1 mile east), East Finchley (1 mile west), Highgate (1 mile south), Crouch End (1 mile south-east) and Hampstead Garden Suburb (2 miles south-west). Bigger towns within reach include London (7 miles south), City of Westminster (5 miles south), Marylebone (5 miles south), Kensington (7 miles south), St Pancras (5 miles south) and Shoreditch (6 miles south-east).
What’s near Fortis Green
We work on buildings around Tollington School, Cherry Tree Wood and The Clissold Arms, among other places. For rail, the closest station is Alexandra Palace station, about 1.4 miles east of the centre. Nearby you’ll also find Kenwood House (1.6 miles south-west) and Grand Arcade (1.8 miles north-west). Open spaces near Fortis Green include Highgate Hill and Glebelands Local Nature Reserve.