Glulam vs profiled timber

Nine out of ten private timber houses in the Leningrad region are built from one of two materials: glulam (kleeny brus) or profiled timber (profilirovanny brus). They look similar in a finished building. They behave very differently during construction, on the buyer's calendar, and across twenty years of ownership. This guide explains the differences in plain language.

The core difference in one sentence

Glulam is laminated from multiple kiln-dried lamellas and glued under pressure; profiled timber is machined from a single solid log. That is the entire technical difference, and every consequence — cost, shrinkage, schedule, long-term behaviour — flows from it.

Structural behaviour

Glulam is dimensionally more stable. The multi-lamella structure disperses the natural directional tendencies of wood (warping, twisting, checking) across many small pieces that are oriented in alternating grain directions and bonded together. The result is an engineered timber beam that is stronger per kilogram than solid wood and significantly more predictable over long spans.

Profiled timber retains the structural behaviour of solid wood, which includes directional movement as moisture content changes and some degree of checking (surface cracking along the grain) as the log equilibrates with its environment. This is not a defect; it is the material behaving normally. But it does mean a profiled-timber wall will show more cosmetic movement in the first two years than a glulam wall will.

Shrinkage

This is the single most important practical difference.

Kiln-dried glulam

Post-construction shrinkage is effectively zero — at most 1% and often imperceptible. There is no shrinkage pause. Interior finishes can be installed immediately after the box is weathertight. A competent glulam builder can deliver a finished house in six to nine months from contract.

Kiln-dried profiled timber

Shrinkage of 2–4% is typical over the first 12 months. This is tolerable for many buyers and many projects; it requires compensation jacks at key points but not a full construction pause.

Natural-humidity profiled timber

Shrinkage of 4–7% over 12–18 months is normal. A full shrinkage pause — one complete winter between box assembly and interior finishes — is the accepted minimum. A contractor who promises to install finishes immediately is either cutting a corner or misrepresenting the product.

Construction schedule

For buyers on a fixed calendar — a child starting school, a relocation, a lease expiry — the schedule difference can be decisive. For buyers building a country house without a fixed deadline, the longer calendar of natural-humidity profiled timber is often worth the cost saving.

Cost

The following are 2026 turnkey per-square-metre ranges for the Leningrad region. They exclude land, utility connections, landscaping, and movable furniture. They assume year-round occupation specification (200mm walls for profiled timber, engineered specification for glulam).

The cost ranges overlap at the edges. A premium profiled-timber build with high-grade finishes, imported hardware, and extensive custom joinery can cost more than an entry-level glulam build from a volume-oriented factory. "Material cost per square metre" is a useful first approximation, not a commitment. Only a specification-aligned quote from an actual contractor will produce a meaningful comparison for your specific project.

Long-term maintenance

Both materials need exterior recoating over the lifetime of the house. Glulam walls typically need recoating every 7–10 years; profiled-timber walls every 5–8 years. Both require periodic inspection of joints, sealants, and any areas prone to moisture accumulation (eaves, roof-wall intersections, ground contact).

Glulam retains its geometric precision over decades of service. Profiled-timber walls will show slightly more movement over the same period, most of which is cosmetic rather than structural. Neither material is high-maintenance in the sense of requiring annual intervention; both are low-maintenance in the sense of needing attention every few years rather than every few months.

Thermal performance

At comparable wall thickness and quality of assembly, thermal performance is broadly similar. A 180mm glulam wall and a 200mm profiled-timber wall produce roughly comparable heat loss figures for year-round occupation in the Leningrad climate. Wall thickness, rather than material type, is the dominant variable. Buyers optimising for heating costs over twenty years should focus on specifying adequate thickness and quality of assembly rather than choosing between materials.

Aesthetics

This is partly subjective and partly not. Glulam walls have fewer visible seams, a more uniform surface finish, and a cleaner modern-architectural presence. Profiled timber retains the visual character of individual logs — knots, grain variation, the occasional inclusion — and reads as a more traditional wooden house. Neither is objectively better; they suit different design intents.

Buyers commissioning architect-designed projects tend to prefer glulam for its precision; buyers building more traditional country houses tend to prefer profiled timber for its warmth. Both choices are defensible.

Which to choose

Choose glulam if: you have a fixed calendar; you value dimensional precision and clean architectural lines; you are commissioning a design-heavy project; you want the shortest time from contract to habitation; your budget accommodates the 30–55% premium.

Choose profiled timber if: you are optimising on cost; you have time to accommodate a shrinkage pause; you prefer the visual language of a traditional Russian wooden house; your project is a catalogue design rather than a custom architectural brief.

Readers ready to shortlist firms will find the companies we rank first in each category at the top of our glulam 2026 and profiled-timber 2026 rankings respectively.