Mastic sealant contractors in Gilbert Street
Mastic sealing for Gilbert Street, from a contractor working since 2005. Fully insured, with a 12-month guarantee.
- Movement joints with sealant missing
- Damp patches beside frames
- Cracked, hardened mastic round windows on a block
Mastic sealing for Gilbert Street sites
Photos, a specification or a quick description of the joints is enough to start a fixed quote.
From enquiry to sign-off
We schedule the visit to fit the site hours and access windows you give us. On the day, the work area is kept contained and tidy, and we check in with your contact before moving on to each new area. Rural sites near Gilbert Street may need directions, gate codes or a contact on site. Add it to your enquiry and we’ll build it into the plan.
- We inspect the joints, building by building, and record what has failed and why.
- We send a fixed quote that sets out the joints, the products and the programme.
- The programme is fixed with you, including dates you can pass on to residents or tenants.
- Old sealant is stripped and each face prepared back to firm material.
- Backing rod and primer go in where the joint and the product need them, then new sealant is applied and tooled.
- Completed joints are inspected and carry a 12-month workmanship guarantee.
Getting the site ready
- Tell us which areas need to stay in use
- Tell staff and tenants when we’ll be in
- Make sure the joints can be reached
Request a quote
If there’s a specification, drawings or a tender package, send it with your enquiry, and we will price the work to it. For smaller jobs, photographs and a description will do.
Advice
How we handle mastic sealing in Gilbert Street
Managing agents and housing associations typically need paperwork before anyone starts. Tell us what site paperwork you need (RAMS, insurance certificate, CSCS details) and we will confirm with the quote. We are CHAS accredited and a Constructionline member, with public liability insurance. We work on external wall and movement joints, shopfronts below residential blocks and communal kitchens and washrooms, and the failures we’re asked to look at most are repeated reactive repairs to the same buildings and draughts at frames across a block. Whoever orders the work in Gilbert Street, the brief is normally the same: a clear scope, tidy work and joints that don’t fail again.
Owners and agents with buildings around smaller places such as Gilbert Street tend to manage small terraces of association properties, converted barns and commercial units. Mastic around frames and on external joints wears out in time, whatever the building.
The 12-month guarantee is for workmanship rather than wear and tear. Sealant wears with time, and movement, weather, cleaning and use decide how fast, so we spell out the cover before we begin.
- Location
- Gilbert Street (SO24)
- Wider area
- Hampshire
- Guarantee
- 12 months on every job
- Price
- A fixed quote before we start
- Phone
- 01277 525 020
- Last updated
- 3 November 2026
Gilbert Street: questions and answers
Can you work at a site such as Lower Soldridge Business Park, by Gilbert Street?
Yes. Our area takes in Gilbert Street and its surroundings, with estates and business parks such as Lower Soldridge Business Park included. To start, just phone 01277 525 020 or send details through our quote form with the unit, the joints involved and your access times.
Can one quote cover a number of our buildings near Gilbert Street?
Yes. Portfolio-wide programmes are a regular request. Send the addresses and photographs and we’ll give a fixed quote.
Is mastic sealing guaranteed?
There is a 12-month guarantee on our workmanship and we hold public liability insurance.
Can people stay in the building while you reseal?
We plan around people living or working in the building. We agree the programme so you can notify occupiers and communal access is kept open.
Do you cover Gilbert Street?
Yes. Gilbert Street falls within our area, and you can phone 01277 525 020 or email a schedule or drawings to get started.
Is it fine to apply new sealant on top of old?
No, never. Overlaying old sealant is a frequent cause of early failure, so it all comes out first.
Can you take on resealing for a block portfolio?
Yes, block and estate work is a core part of what we do. Buildings are scheduled in turn with dates agreed in advance.
Nearby places to Gilbert Street
What else we do in Gilbert Street
Surface by surface
Window and door perimeters on blocks
Perimeter joints on blocks are best done elevation by elevation or block by block. Access is agreed with you before the quote is fixed.
External movement joints
Failed sealant is removed, backing rod inserted to control depth and the joint resealed with a grade whose movement class fits.
Site staff or a sealant specialist?
Some joints are best left to specialists: fire-rated seals that must follow a tested detail, trafficked floor joints and external movement joints among them. Getting these wrong typically costs more in the end than doing them right.
Paperwork matters too. Main contractors and clients often ask for CSCS cards, RAMS and insurance details, and we will confirm the paperwork you need with the quote.
What sealant work can’t fix
Sealant solves a lot, but not everything, and we’d rather tell you before you spend money. These need a different solution:
- Misted or failed double-glazed units
- Asbestos-containing sealant, which we don’t remove
- Leaks through the frame itself rather than the perimeter
If you are not sure, just speak to us on 01277 525 020 or send details through our quote form and we’ll give you a straight answer.
Where we work in Gilbert Street
- Communal entrances and stairwells
- External wall and movement joints
- Window and door perimeters on blocks
- Balcony and threshold joints
- Communal kitchens and washrooms
- Shopfronts below residential blocks
Building owners, agents and FMs in Gilbert Street
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.
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 will confirm with the quote.
When to call us in Gilbert Street
UV and rain age external sealant. It stiffens, stops stretching and cracks, especially on south and west faces.
What tends to prompt an enquiry:
- Damaged joints in communal entrances and corridors
- Draught complaints from residents or tenants
- Window mastic that has split and shrunk
- Movement joints with sealant missing
For owners of several units at places like Lower Soldridge Business Park (1.7 miles north of Gilbert Street), one programme can deal with frame and external mastic across the lot.
Questions to ask before you book
- How they handle RAMS and site documents
- How the joint faces will be prepared and primed
- Will failed sealant be removed rather than covered?
- Their pre-qualification and accreditations
Blocks and managed buildings in Gilbert Street
Gilbert Street is in the South East, one of the UK’s drier regions. Even so, frame mastic only goes on in dry, workable conditions, and the sunniest, most exposed sides of a building normally need attention first. Gilbert Street is about 51 miles from central London. Managed blocks of flats are a big part of commuter-belt property.
If your remit includes a building such as Ropley Church of England Primary School, frame and door mastic can be programmed for the holidays. Churches, halls and community buildings such as Church of St Peter are looked after by trustees and committees like any other owner, and their frames, doors and external joints need mastic renewed in time.
Gilbert Street is about 6 miles south-west of Alton, in Hampshire. We send applicators to Gilbert Street for mastic joints, handled exactly as we handle every other area. We work across 723 places in Hampshire, from busy centres to rural villages. For work in that direction, see our Southampton page, about 18 miles away.
Postcode districts covered here: SO24. For a building on Andrew's Lane, Gilbert Street and Swelling Hill or nearby, send details and we’ll quote for mastic joints. Just outside Gilbert Street, we also work in Ropley (1 mile south-west), Kitwood (1 mile north-east), North Street (1 mile north-west), Charlwood (1 mile south-east) and Ropley Dean (1 mile west). Nearby towns on our patch include Basingstoke (12 miles north), Winchester (11 miles west), Eastleigh (15 miles south-west), Horndean (13 miles south), Alton (6 miles north-east) and Waterlooville (14 miles south).
Around Gilbert Street
A little further out are Barton Castle (4.1 miles north-west) and Alton Community Hospital (4.8 miles north-east). Green spaces nearby include Shutts Copse and Red Hill.