Three products. Local-first. Built for UK standards and the realities of working on site.
// Products
Each built to solve a real problem on site and in the design office.
Your engineering workspace.
61 calculators, 36 reference packs, and 62 UK building standards in one local-first desktop app. Ventilation, heating, cooling, electrical, plumbing, commissioning -- all validated against CIBSE, BS, and Approved Documents.
mepdesk.appTalk where phones can't.
Bluetooth mesh messaging for construction sites. Messages hop phone-to-phone through basements, stairwells, and dead zones. AES-256 encrypted. No WiFi, no cellular, no infrastructure needed.
sitetalkie.comInfrastructure for the mesh.
Dedicated BLE relay hardware that extends SiteTalkie coverage across entire multi-storey sites. IP65-rated, installs in 30 minutes, 150 metres per node. Mount it, plug it in, scan the QR -- it joins the mesh.
sitenode.co.uk// About
Gridmark Technologies was founded by an MEP engineer frustrated by terrible tools. Spreadsheets that break. Standards buried in PDFs. Apps that need internet to do basic maths. Sites where phones can't get signal.
We're building software and hardware that actually works for the people who design, build, and maintain buildings -- starting with UK standards and workflows, because that's what we know.
// UK-based. One engineer. Building in public.
Your data lives on your device. Cloud sync is optional, encrypted, and entirely in your control. Tools should work without internet.
Every calculation cites its source. CIBSE guides, British Standards, Approved Documents -- referenced by section and page number.
We test in the environments our users work in. Basements with no signal. Tablets with gloves. Laptops on dusty desks.
// Contact
We're always interested in hearing from engineers, contractors, and manufacturers.
hello@gridmark.co.uk