Installing a bathtub

Base preparation.

Before installation, the following are checked:

• floor levelness;
   

• strength of the base;
   

• presence of waterproofing;
   

• location of the drainage outlet.

An uneven base can cause misalignment, creaking, and additional stress on the bathtub structure.

Frame assembly and installation (for acrylic models).

Acrylic bathtubs are installed on a metal frame or adjustable legs.

Important:

• properly secure the frame;
   

• evenly distribute the load;
   

• ensure stability without wobbling;
   

• level the bathtub precisely.

Improper frame assembly may cause bottom deformation and cracks over time.

Drain and trap connection

The drainage system must be completely watertight.

Critical points:

• correct trap assembly;
   

• overflow installation;
   

• tight sealing of gaskets;
   

• load testing (filling the tub completely with water).

Even a small connection error can cause a hidden leak under the bathtub that may only become noticeable much later.

Faucet installation (if required)

If the faucet is mounted on the wall or on the bathtub rim, it is important to:

• set the correct center distance;
   

• ensure watertight threaded connections;
   

• check water pressure;
   

• eliminate leaks in concealed connections.

Leveling and final fixing

The bathtub must be installed strictly level, with a slight technical slope toward the drain.

Improper leveling can lead to:

• water stagnation;
   

• increased stress on the drain;
   

• cracks in sealant joints;
   

• moisture buildup along the edges.

Even a few millimeters of deviation can affect long-term durability.

Joint sealing

After installation, the joint between the bathtub and the wall is sealed.

The following materials are used:

• sanitary silicone;
   

• waterproofing tapes;
   

• decorative trim borders (if necessary).

Installation is considered complete only after full leak and seal inspection.

Acrylic bathtub installation

Acrylic bathtubs are lightweight but more sensitive to improper load distribution. Without proper support, the bottom may flex, leading to cracks and sealing issues over time.

The specialist:

• correctly assembles and fixes the metal frame;
   

• reinforces support points if necessary;
   

• evenly distributes the load;
   

• precisely levels the bathtub;
   

• checks stability when fully filled with water.

▶︎ This ensures structural stability and extends the bathtub’s service life.

What to discuss:

• whether additional base reinforcement is needed;
   

• whether a decorative panel or tile cladding is planned;
   

• whether convenient access to the drain trap will remain.

Cast iron or steel bathtub installation

Cast iron and steel models are heavier and require careful handling, precise positioning, and secure fixing.

During installation, it is important to:

• verify floor and structural strength;
   

• level the bathtub accurately;
   

• ensure tight contact with walls;
   

• minimize vibration and noise during water filling.

▶︎ Special attention is given to structural stability and operational safety.

What to discuss:

• whether the structure can support the additional weight;
   

• whether extra assistance is needed for lifting;
   

• whether sound insulation or damping pads are required.

Drain trap and waste system replacement

The drainage system is one of the most vulnerable elements under the bathtub. Over time, gaskets lose elasticity, joints loosen, and plastic components may begin to leak.

The specialist:

• removes the old trap;
   

• installs a new drain and overflow system;
   

• uses high-quality seals and gaskets;
   

• tests all joints under full load (filled tub);
   

• checks watertightness after draining.

▶︎ This significantly reduces the risk of hidden leaks and finish damage.

What to discuss:

• the age of the current drainage system;
   

• signs of moisture or odor under the bathtub;
   

• whether a reinforced or easier-to-maintain trap is needed.

Decorative panel installation

A decorative panel covers the space under the bathtub, conceals plumbing connections, and gives the bathroom a clean, finished look — while maintaining access to technical components.

During installation, the specialist:

• selects the appropriate panel type (sliding, removable, or tile-ready);
   

• aligns the structure precisely;
   

• securely fixes all elements;
   

• eliminates gaps and misalignment;
   

• provides a service hatch or removable panel for drain access.

▶︎ The result is an aesthetically finished space with full maintenance accessibility.

What to discuss:

• which panel type suits your bathtub model;
   

• whether tile cladding is planned;
   

• where the access hatch will be located;
   

• whether ventilation under the bathtub is required.