SisäRYL
SisäRYL brings together up-to-date quality requirements for interior construction work, ensuring that design, construction, and supervision speak the same language.
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Easy to Reference in Your Contracts
When you reference the RYL service in your tender documents and contracts, all contractors receive the same quality requirements at once, making tendering easier and bids more comparable.
You do not need to repeatedly create detailed requirements for every work phase from project to project.
RYL also simplifies the preparation of project-specific documents (building specifications and work descriptions), reducing the need to repeat the same requirements across multiple projects.

An architect prepares the building specification for a new office building. The plans define the intended use of spaces, materials, and surface finishes.
Instead of drafting detailed technical quality requirements for every interior work item, the architect can simply refer to SisäRYL requirements in the building specification.
When contractors carry out the work, SisäRYL serves as an objective framework for quality requirements. This helps ensure that the client receives a consistent and contractually agreed level of quality.


A developer is planning the construction of a commercial building. Tender documents define the scope of work, schedule, and project-specific requirements.
Instead of drafting detailed technical requirements for every work phase, the tender documentation can reference SisäRYL quality requirements.
When construction contracts are signed, SisäRYL becomes part of the contractual documentation, ensuring that every contractor commits to the same industry-recognized quality standards.
The main contractor manages the execution of interior works and employs subcontractors for activities such as painting and tiling.
Rather than each contractor interpreting requirements differently, all work is carried out according to SisäRYL. This provides a clear benchmark for quality and working methods.


A supervisor verifies that interior works comply with contracts and the client’s objectives.
Instead of relying solely on visual impressions, SisäRYL provides precise criteria for aspects such as surface flatness, dimensional accuracy, and installation methods.
A material supplier provides flooring products and acoustic panels for construction projects.
When products meet SisäRYL quality requirements—for example regarding durability, fire classification, or surface classification—the supplier can demonstrate their suitability to clients and contractors.

RYL’s established role as the project's general technical reference document is comparable to that of the contractual document YSE.
The Building Act and YSE require that design and construction be carried out in accordance with good construction practice.
