Dream underfloors 
Spring family of floors includes six professional varieties optimised for indoorsports; two dance floors, three sports floors and the multipurpose Spring Portable moveable floor. The floors' different characteristics can also be combined as required. Spring conforms to the norms established for sports floors.

Choose the floor according to the area of use
Spring sports floors are available with various surface and structural characteristics depending on the floor's functional purpose. The top layer can be either Karelia 3-layer wood flooring with a 3,5 mm or 6 mm surface. 

Forget unevenness
Even though Karelia Spring subfloor has to be even (3 mm/ 3 m), the uneveness can be fixed and the strutural height can be modified with the adjustable metal legs. With the help of the legs, the structural height can be adjusted between 150 and 190 mm.  

45 degrees insures even flexibility

When it comes to flexible materials, wood is the best and long-lived alternative. Non-fatiguing special plywood and rubber shock pads are used in the manufacture of Spring floors' frame modules. Depending on the use, frame modules can feature a double, triple or even quadruple elastic construction. Frame modules are installed at a 45-degree angle to ensure that the elasticity chanracteristics of the floor's structure and materials will be evenly distributed over the entire floor surface. You can stiffen the sprung structure by using pieces of plywood for example at locations where there are movable seats or door openings.

More information on each product from the product links

Karelia Guarantee
Karelia Spring -sport floors are guaranteed by Karelia-Upofloor Oy and Bona Sportive Systems.  Here you can find the guarantee certificate.

You can play as hard as you want - Spring bends to your needs