Checking Site Conditions Before Ordering Glass Balustrades

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Before ordering glass balustrades, verify the exact dimensions, the condition and levelness of the edge or slab, the fixing method, and site access. A careful site survey prevents remakes, because glass is cut to size and cannot be adjusted once fabricated.

Why a Site Survey Comes First

Glass balustrades are made to measure, and the glass panels are cut and tempered before they reach the site. Any error in the measurements or the substrate usually means a panel has to be remade, which costs time for everyone on the job.

A proper survey confirms what is actually built, not only what appears on the drawings. Walls, slabs and stair nosings often differ slightly from the plans, and those differences are exactly what the survey is meant to capture.

Measuring the Run and the Openings

Measure each run from fixed point to fixed point, and record the length of every straight section and every corner. Take readings at more than one height, because a slab edge is rarely perfectly straight.

Measure the overall length and the height above the finished floor
Note the position of columns, returns and gate openings
Check diagonals on rectangular terraces to confirm square corners

Write each measurement on a sketch with its location, so the factory can match it exactly.

Checking the Substrate and Fixing Points

Inspect the slab edge, wall or stair where the balustrade will be fixed. Look for cracks, crumbling concrete, uneven surfaces and any protrusions that could interfere with the base channel, clamps or posts.

Confirm the type of fixing that suits the material: concrete edge, steel structure or tile finish. If the finish is still to be laid, record the planned thickness, because it changes the final height and the position of the base.

Levels, Slopes and Alignment

Use a long level or laser to check whether the top of the slab or the stair nosing is level. On terraces, a slight fall for drainage is normal, and the balustrade must follow it or be stepped accordingly.

For stairs, measure the pitch and the nosing line, since rake and landing transitions require their own panel geometry. Mark any deviation, however small, on your sketch and tell the fabricator before production starts.

Access, Protection and Installation Logistics

Glass panels are large and heavy, so check how they will reach the installation point. Confirm lift size, stair width, door openings and the route across the site before ordering.

Clear the working area and protect finished floors and tiles
Confirm that power and safe working platforms are available
Agree on a date when the surface is ready for installation

Good access planning keeps panels undamaged from the factory to their final position.

From Survey to Production and Installation

Once the survey is complete, the factory prepares a drawing and written specification for your approval. After approval, the metal parts are produced and finished, and the glass is cut, tempered and packed.

Installation follows the agreed schedule. Because each step depends on accurate survey data, the time spent measuring carefully at the start is the best protection against delays later on.

Frequently asked questions

Who should carry out the site survey?

The survey is best carried out by someone familiar with fabrication requirements, such as the installer or the factory representative. Their measurements should be checked against the drawings before anything is ordered.

Can I order glass before the floor finish is laid?

It is possible, but only if you record the planned finish thickness and its exact level. Any later change in thickness can alter the required base height, so confirm it with the factory first.

What if the slab edge is not perfectly straight?

This is common, and it should be recorded during the survey rather than ignored. The panel layout and base fixing can usually be adapted to the real edge when the deviations are known in advance.

Do I need to know the exact safety requirements before measuring?

Yes, the Israeli railing standard SI 1142 sets the general requirements for railings. Exact values for height and loading should be checked with the engineer on your project.

Common mistakes to avoid

The most common mistake is measuring from the drawings instead of the built structure, and ignoring small slopes or finish thickness. Both lead to panels that do not fit and must be remade.

Our recommendation

Measure at several points along each run and record every deviation on a dated sketch, then send the sketch with photos to the factory before ordering. Confirm the final finish thickness and level in writing.

Summary

A careful site survey, covering measurements, substrate, levels and access, is the foundation of a glass balustrade that fits correctly the first time.

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