Mastic sealing for building owners and managing agents in Welborne, Hampshire
Sealant work in Welborne for main contractors, managing agents and facilities managers: mastic sealing for building owners, managing agents and housing associations, with a fixed quote first.
- Draught complaints from residents or tenants
- Cracked, hardened mastic round windows on a block
- No planned programme for sealant
Need mastic sealing in Welborne?
Share the site address and what’s failing, and we’ll reply with a fixed quote or arrange a visit.
About our mastic sealing in Welborne
For over 20 years we have resealed joints for owners, agents and landlords. Our applicators are CSCS-carded and we hold public liability insurance. Each building we complete carries a 12-month guarantee on our workmanship. If you’re dealing with mastic failing across several blocks on an estate and repeated reactive repairs to the same buildings, we can help, on shopfronts below residential blocks, external wall and movement joints and balcony and threshold joints alike. Searching for sealant specialists in Welborne? We have been sealing commercial buildings since 2005, with CSCS-carded applicators.
Owners and agents with buildings around smaller places such as Welborne tend to manage small terraces of association properties, converted barns and commercial units. Frame and wall-joint mastic on all of them ages and hardens.
The 12-month guarantee is for workmanship rather than wear and tear. How long a sealant joint lasts depends on movement, exposure, cleaning and use, so we spell out the cover before we begin.
- Where
- Welborne (PO17)
- Wider area
- Hampshire
- Cover
- A 12-month guarantee
- Quotes
- A fixed quote before we start
- Telephone
- 01277 525 020
- Updated
- 3 November 2026
What we can’t put right
Part of a good diagnosis is knowing where sealant stops. We will tell you if the real problem is one of these:
- Water coming in from the roof or rainwater goods
- Old mastic suspected of containing asbestos, which must be tested and dealt with by a specialist first
- Failed window or door frames, which need a window contractor
If you are not sure, just call 01277 525 020 or email drawings and photos and we’ll give you a straight answer before you book.
What we seal
- Communal kitchens and washrooms
- Balcony and threshold joints
- Communal entrances and stairwells
- Shopfronts below residential blocks
- External wall and movement joints
- Window and door perimeters on blocks
Planned mastic for Welborne portfolios
Welborne sits close to the coast, within about 3 miles. On buildings near the shore, the side facing the weather normally needs its mastic renewed first, so it’s worth inspecting those sides more often. Welborne is in the South East, one of the UK’s drier regions. Outside work still depends on dry joints, and elevations facing the sun and the prevailing weather are usually where frame mastic ages first.
If your remit includes a building such as The Henry Cort Community College, frame and door mastic can be programmed for the holidays. If you own or manage units on a site such as Knowle Village Business Park, 0.7 miles west of Welborne, failed mastic on frames, door surrounds and external joints can be dealt with unit by unit.
Welborne is about 2 miles north of Fareham, in Hampshire. Welborne sits inside our coverage, and jobs here get the same fixed quote and 12-month guarantee as anywhere else. Across Hampshire, 723 places are covered, Welborne among them. Our Portsmouth page has more on work in that area, about 7 miles away.
Commercial sites across PO17 are covered for mastic joints. Close to Welborne, our area also takes in Crockerhill (1 mile east), Wickham Common (1 mile north-east), North Fareham (1 mile south-east), Hundred Acres (2 miles north-east) and Fareham (2 miles south). Bigger towns within reach include Winchester (13 miles north-west), Gosport (6 miles south), Havant (9 miles east), Eastleigh (9 miles north-west), Horndean (8 miles east) and Totton (14 miles west).
Near you in Welborne
Recent enquiries here include premises near The Miners Arms and the streets around them. Welborne’s nearest station is Fareham station, about 1.9 miles south of the centre. Nearby you’ll also find Carron Row Farm Museum (2.4 miles south-west) and Portchester Castle (4.5 miles south-east). Not far away are Portsdown Hill and Swanwick Lakes.
Site staff or a sealant specialist?
The visible bead is only part of the job. Backing rod, primer where specified and a joint designed to move with the building are easy to get wrong without experience.
For most general trades, sealant is a sideline. A specialist brings correct preparation, depth control with backing rod and a product suited to that particular joint, which is what makes a joint last.
What we’re called out for in Welborne
Sunlight and weather break mastic down over time. It stiffens, stops stretching and cracks most of all on the sunniest and most exposed elevations.
Clients typically get in touch after noticing something like this:
- A mix of products and colours from past repairs
- Mastic failing across several blocks on an estate
- Leaks at window and door perimeters
- Brittle perimeter mastic across a building
If you look after a block within reach of Fareham station, 1.9 miles south of Welborne, frame and balcony mastic can be renewed on one programme.
What to look for in a quote
- What site paperwork they can supply
- How long is the guarantee, and what does it include?
- Proof of insurance
- How joint depth will be controlled
From enquiry to sign-off
Diagnose, treat, 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. Rural sites near Welborne may need directions, gate codes or a contact on site. Add it to your enquiry and we will build it into the plan.
- We check the asbestos register for older buildings and look at the joints.
- A fixed quote covers the joints, products and order of work.
- Failed mastic is removed completely.
- The joints are prepared and resealed with the right product.
- Buildings are completed in turn.
What we need from you
- Flag any permit to work we will need
- Have the specification and drawings to hand
- Warn occupants and staff about the work
Getting a fixed quote
Send details, get a quote, we seal, guaranteed: that’s how every job runs. To take the first step, call the office on 01277 525 020 or email a schedule or drawings.
Related advice
What the job involves on each surface
Estate-wide resealing programmes
Consistent products and colours across an estate make future maintenance simpler and easier to manage.
External movement joints
Movement joints are cleaned out, backed with rod and resealed with a sealant of the right movement class.
Nearby places to Welborne
Also in Welborne
Keeping the joints sound
For the best life from the joints:
- Make it easy for occupiers to report draughts
- Mention RAMS, insurance or CSCS requirements up front
- Log resealing dates block by block
- Prioritise elevations facing the weather
Our workmanship is covered for 12 months, so report any failure in that time. Beyond that, routine checks spot the next round of repairs.
Leaks at window perimeters spoil finishes and can affect frames. Early resealing is far simpler than repairs inside.
Your questions answered
Our building in Welborne is near the coast: does that change the sealant?
It can. Driven rain and salt are tougher on outside sealant than sheltered inland conditions. Product choice and preparation matter more, and sea-facing elevations are worth inspecting more often.
Is Welborne too small for you to travel to?
No. Small places get the same service as large ones. London and every South East county are within our area. Where we can, we group nearby jobs to make the most of each trip.
Do you work with property factors and landlords?
Yes, that’s exactly who this service is for. We work through buildings in a planned order so you can plan around it.
How much does the work cost?
It depends on the job: quantities, access, the product and any phasing. Call for a quote and we will price it properly.
Can weather delay the job?
For external joints, yes. Sealant needs a dry joint and a temperature within the product’s range, so frost, rain or cold mornings can delay outside work. Internal work is rarely affected.
Do you take on small jobs?
Whatever the size, the process is the same: details, then a fixed price, then sealing, then a 12-month guarantee.
How long before the joints can be used?
We’ll confirm how long the chosen product needs to cure, and flag anything to keep off until it has cured.