Signing Off Hidden Work: Photos and Records Before Closing

Once walls, floors and ceilings are closed, cables, pipes and waterproofing disappear from view. Inspecting, photographing and formally signing off concealed work in time prevents later problems.

There comes a point in every renovation after which some work can never be looked at again: plaster goes on, screed is poured, plasterboard is fixed. Everything done before that moment – cables, pipes, insulation, fixings – is concealed work. Its quality will stay invisible for years, but if there is a problem, fixing it means tearing out finished surfaces. That is why signing off concealed work is one of the most important checkpoints in a renovation.

What counts as concealed work

Anything that will be covered falls into this category. In flats and houses it mainly includes:

• electrical cables, boxes and low-voltage lines (internet, TV, intercom);
• water and drain pipes, manifolds and installation frames;
• underfloor heating pipes or cables;
• air-conditioning refrigerant lines and condensate drains;
• waterproofing layers in bathrooms and kitchens;
• sound and thermal insulation;
• plasterboard framing and in-wall reinforcement for heavy items;
• reinforcement and formwork before concrete is poured in construction.

When the inspection takes place

The inspection window is the short gap between the work being finished and being covered. To avoid missing it, sign-off points are marked in the schedule and the contractor notifies the client a day or two ahead.

If the client cannot be on site, a technical supervisor or an authorised person can carry out the inspection. If nobody can attend, at least a detailed photo and video report should be required.

Sometimes sign-off is split into several steps. In a bathroom, for example, pipes and installation frames are checked first, then the waterproofing, and only after that is tiling allowed to begin. In house building, reinforcement is inspected before the pour and foundation waterproofing before backfilling. When every stage has its own sign-off, nothing gets lost in between.

How the photos should be taken

Photos of concealed work should go beyond “we took a picture”. Photos that remain useful later meet several conditions:

• a wide shot: the whole wall or floor in frame, with reference points such as a window or door so the room is recognisable;
• measurements: a tape measure showing the distance of a cable or pipe from the floor or a corner;
• close-ups: joints, fittings, boxes, how waterproofing tape is laid into corners;
• consistency: each wall photographed in the same direction so the room can be pictured as a whole later.

These photos become invaluable later for hanging a shelf, drilling a wall or locating a leak. It helps to store them in folders by room.

Video is a useful addition: a short, slow clip panning across the room shows how the photos relate to each other. But it does not replace measured photos, because finding a specific point later requires a frame where the tape measure is visible.

Tests: checking what the eye cannot see

You can see that a pipe is laid correctly, but only a test shows it does not leak. Water lines are pressure-tested, drains are flow-tested, underfloor heating circuits are tested before being covered, and insulation resistance is measured on electrical circuits.

For waterproofing, water is sometimes left standing for a period to check for leaks. Test parameters and durations follow the requirements of the material and system manufacturers, and results are recorded.

What goes into the sign-off record

The record does not need to be complicated, but it should cover:

• the property, room and a brief description of the work;
• the main materials used;
• tests carried out and their results;
• any defects found and how they were fixed;
• the date and signatures of both parties;
• a reference to the photo folder.

If there are defects, they are fixed before the work is covered and inspected again. Concealed work closed up with open issues becomes a source of disputes later.

One copy of the record stays with the client and one with the contractor. Keeping them electronically is convenient too: with the signed scan and the photos in the same folder, the documents are easy to find years later.

Why the records matter later

The photo archive and records of concealed work stay useful for years after the renovation. They tell you where to look when there is a leak, where it is safe to fix things to walls and which lines can be kept in a future renovation. In warranty cases, they prove the work was done as agreed.

Zaferoğlu İnşaat carries out renovation in stages, and how concealed work will be signed off can be agreed separately for each project. Speak to our specialists about adding sign-off points to the schedule for your property.