Facade Sealing in Northumberland Park
We carry out facade joint and window perimeter sealing on commercial buildings in Northumberland Park and the surrounding area. Send details for a fixed quote.
- Previous reseals run over old sealant
- Cladding panel joints that have opened up
- Old perimeter mastic that has dried out
Facade sealing in Northumberland Park
Send drawings, photos or a joint schedule, or tell us about the site, and we’ll come back with a fixed quote.
Surface by surface
Brick and stone facades
Brick and stone facades have perimeter and movement joints that need a compatible sealant. We avoid acetoxy silicone, which can stain some natural stone, with primer where its maker specifies.
Cladding panel joints
On sealed panel systems, every joint keeps water out. Failed runs are cut out and rebuilt end to end.
Facade sealing in Northumberland Park
We are often asked to look at water coming in around frames. Very often the perimeter bead has cracked or lost its grip, but not always. If the evidence points away from the sealant, we say so before quoting. We work on coping and flashing joints, shopfront frames and cladding panel joints, and the usual reasons a site gets in touch are unsightly perimeter sealant on a visible elevation and cold air coming in at window perimeters. Most enquiries from Northumberland Park start with one failed joint and grow into a wider look at the building: we look at the rest while we are there and tell you what we find.
Construction in a London area such as Northumberland Park 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.
Our workmanship is guaranteed for 12 months, in Northumberland Park as everywhere else we work. If our installation lets you down in that time, we return and fix it.
- Location
- Northumberland Park (N17, N18)
- Wider area
- Greater London
- Guarantee
- 12 months on our workmanship
- Price
- Fixed quote, scope in writing
- Call
- 01277 525 020
- Updated
- 3 November 2026
Diagnose, treat, sign off
Inspect, seal, sign off: every visit follows that pattern. First comes an inspection and agreement on scope, then the work is carried out to the specified product and detail, and the job ends with a walk round and sign-off. Planning a London job such as one in Northumberland Park starts with access: booked loading, goods lifts, the building’s permit system and a spot to keep materials. Send the building rules and access times with your enquiry.
- We plan access and the order of elevations with the client.
- Weather and temperature are checked against the product’s limits.
- Each joint is cut out and the edges inspected.
- Joints are cleaned, primed if required and fitted with backing rod.
- Facade-grade sealant goes in and is tooled to a tidy concave profile.
- Once signed off, the work carries our 12-month guarantee.
Preparing the site
- Let us know about inductions and permits
- Agree which areas must stay open
- Send your site hours and access windows
Ask for a quote
We quote a fixed sum against the scope you give us, so the cost is agreed before work starts. To start the process, ring 01277 525 020 or send photos by email.
Read more
Sites and facades in and around Northumberland Park
Site traffic in Northumberland Park falls within London’s ULEZ, like everywhere else in Greater London. Add booked deliveries and tight storage, and the mastic package needs planning with the site team. A 2-mile radius around Northumberland Park takes in several hotels. Hotel extensions and refits normally have to fit around bookings, so mastic dates are tight.
New wings at hospitals like North Middlesex University Hospital (0.9 miles north-west of Northumberland Park) bring long runs of window and panel joints to seal. Units on estates such as Compass West Industrial Estate, less than half a mile to the north of Northumberland Park, tend to be reclad and refitted as tenants change, and each job leaves cladding and perimeter joints to seal.
Northumberland Park is about 1 mile north-east of Tottenham, in Greater London. We cover commercial sites throughout Northumberland Park, whether it’s a single job or part of a planned programme. Across Greater London, 764 places are covered, Northumberland Park among them. There’s a separate page for London, roughly 7 miles from Northumberland Park.
We cover the N17 and N18 postcode districts. Buildings on Love Lane, Park Lane and York Road are within our area for facade joints. We also cover Upper Edmonton (1 mile north-west), Edmonton (1 mile north), South Chingford (1 mile east), Picketts Lock (2 miles north-east) and Highams Park (2 miles east). Bigger towns within reach include London (7 miles south), City of Westminster (7 miles south-west), Marylebone (7 miles south-west), Kensington (10 miles south-west), St Pancras (6 miles south-west) and Shoreditch (6 miles south).
What’s near Northumberland Park
Locally, jobs take us to sites close to Duke's Aldridge, No.8 Tottenham pub and London Academy of Excellence Tottenham. Northumberland Park has its own railway station: Northumberland Park (London) station. Other landmarks nearby include North Middlesex University Hospital (0.9 miles north-west) and Markfield Beam Engine and Museum (1.6 miles south). Open spaces near Northumberland Park include Pole Hill and Highams Park Lake.
For managing agents and facilities managers
When you manage a building on behalf of an owner, you need clear quotes and clear reporting. We quote a fixed sum, confirm the scope and walk the finished work with you or your representative.
Hotels, schools, healthcare sites, offices and retail units come to us directly as well. The work is planned around how the building runs, so guests, pupils, patients or staff are disturbed as little as possible.
Your questions answered
Can you work in a London building with booked loading and goods-lift slots?
Yes, we plan every London job around the building’s own access rules. The building manager’s rules go straight into our method.
Is a hospital such as North Middlesex University Hospital somewhere you can work?
Yes, provided the work is planned with the site’s estates team. Each area is agreed with the ward or department and the estates team in advance.
Can you just add new sealant on top?
No. Overlaying is a shortcut that peels away quickly. Our method is a full cut-out, cleaning, backing and a new bead.
Do you seal on top of existing sealant?
No. Failed sealant is removed and the faces cleaned back to sound, dry material first, because fresh silicone will not bond with aged silicone.
What type of sealant goes on window perimeters?
The product follows the joint’s movement, the surfaces and the specification. Specifications often refer to BS EN 15651-1 for facade sealants or BS EN 15651-2 for glazing and we follow the specified product.
Are you insured?
Yes. Mastic Doctor is fully insured, public liability included.
When can the area be used after sealing?
We’ll confirm how long the chosen product needs to cure.
What sealant work can’t fix
Our job is the joint, not everything around it. On its own, sealant can’t deal with:
- Installing or repairing glazing systems
- Specialist high-level access methods
- Movement beyond what any sealant can handle
Not sure which it is? You can ring 01277 525 020 or email a schedule or drawings and we’ll tell you honestly.
What we seal
- Window and door perimeters
- Shopfront frames
- Stone and brick facade joints
- Coping and flashing joints
- Cladding panel joints
- Perimeter joints where frames meet the structure
Why deal with it now?
Every shower drives water through a split perimeter bead. The damage builds out of sight: wet linings, rusting fixings, staining and spoiled finishes. Resealing now costs less than repairing interiors later. Getting scaffold, permits or access booked in Northumberland Park takes effort, so it makes sense to deal with every failing joint while access is in place.
Every site prices differently: joint size, product, access and site hours all play a part. Send the details and a fixed figure follows.
Why appoint us
- Colours confirmed for the specified product
- A fixed quote before work starts
- Fully insured
- Health and safety: CHAS accredited
Read how commercial sealant jobs are priced or how we’re accredited.
Nearby places to Northumberland Park
More services for Northumberland Park
When to call us in Northumberland Park
New sealant run over old sealant rarely holds. Fresh silicone won’t stick to cured silicone, and the patch soon lifts.
Common reasons buildings call us in:
- Air leaks through failed facade joints
- Perimeter joints where frames meet the structure
- Failed sealant on precast panel joints
- Leaks at window and door perimeters
Projects at colleges like Haringey Sixth Form College, 0.7 miles to the west of Northumberland Park, tend to run to term dates, so the mastic is planned tightly.
Questions to ask before you book
- The named product and why it was chosen
- Whether old or failed sealant will be cut out, not overlaid
- Health and safety accreditation such as CHAS
- Whether primer will be used where the manufacturer specifies it