For obvi­ous rea­sons, swim­ming pool areas require a spe­cial approach in terms of design, selec­tion of equip­ment and instal­la­tion of an air ven­ti­la­tion sys­tem. How­ev­er, the pool dehu­mid­i­fi­er itself is far from the only mea­sure that can be tak­en.

Unfor­tu­nate­ly, there are far from iso­lat­ed cas­es of res­o­nant lit­i­ga­tion on the claims of cit­i­zens and orga­ni­za­tions dis­sat­is­fied with the work of con­trac­tors involved in the con­struc­tion and equip­ping of swim­ming pools. Most often, the fol­low­ing prob­lems cause com­plaints: mois­ture dam­age to build­ing struc­tur­al ele­ments, excess con­den­sate; fun­gal for­ma­tions, mold, cor­ro­sion of ele­ments of equip­ment and dec­o­ra­tion, etc.
In con­trast to these cas­es, we can men­tion hun­dreds and thou­sands of nor­mal com­plex­es with swim­ming pools, where noth­ing exfo­li­ates, mois­ture does not destroy build­ing struc­tures and fun­gi do not form. The dif­fer­ence between a prob­lem­at­ic and a suc­cess­ful con­struc­tion lies only in the qual­i­fi­ca­tions of the spe­cial­ists respon­si­ble for the design of the build­ing and engi­neer­ing struc­tures, as well as in the pres­ence or absence of the nec­es­sary degree of inter­ac­tion between all par­tic­i­pat­ing ser­vices and orga­ni­za­tions.

Here are the main require­ments that must be met dur­ing the con­struc­tion and oper­a­tion of a build­ing with a swim­ming pool:

  • Struc­tur­al ele­ments of the build­ing must be able to func­tion nor­mal­ly at ele­vat­ed dew point val­ues.
  • The build­ing must con­stant­ly main­tain a lev­el of rel­a­tive humid­i­ty in the range between 55% and 60%. Dry­ing and con­trol equip­ment must oper­ate 24/7. In this case, the appro­pri­ate lev­el of humid­i­ty is more impor­tant than ques­tions of econ­o­my.
  • All air ducts must be sealed. Humid air must not enter the cold com­part­ments of the room.

Why con­trol humid­i­ty?
Con­trol­ling the lev­el of air humid­i­ty is vital for the prop­er func­tion­ing of a build­ing with a swim­ming pool. Reg­u­lar vio­la­tion of this para­me­ter is guar­an­teed to lead to the destruc­tion of struc­tur­al ele­ments. That is why the design­er, togeth­er with the ven­ti­la­tion and air con­di­tion­ing spe­cial­ist, must pay close atten­tion to the con­trol of the dew point and the imple­men­ta­tion of mea­sures to pre­vent the for­ma­tion of con­den­sate.
Pre­ven­tion of mois­ture con­den­sa­tion avoids such com­pli­ca­tions:

  • The appear­ance of mold and fun­gi on the walls;
  • Cor­ro­sion of wiring and met­al parts of var­i­ous equip­ment;
  • Mist­ed win­dows;
  • Destruc­tion of the fas­ten­ing ele­ments of the main struc­tures and, as a result, the destruc­tion of the main build­ing struc­tures.

Here are a few tips to help keep build­ings safe from these prob­lems:

Walls, ceil­ing
The inner sur­face of the walls must be reli­ably pro­tect­ed from mois­ture. Exte­ri­or walls are always cold­er (in win­ter) than indoor air, and there­fore are par­tic­u­lar­ly sus­cep­ti­ble to its accu­mu­la­tion. The struc­ture of the water­proof­ing lay­er should exclude the pos­si­bil­i­ty of “bridges” for mois­ture to enter the walls.

Air tem­per­a­ture and dew point indoors
The inter­nal dew point must be at least 2.7 degrees below the tem­per­a­ture of the cold­est ele­ments in the room. In this case, when air enters these very ele­ments, its rel­a­tive humid­i­ty does not over­come the mark of 90%. As a result, there is no con­den­sa­tion on the sur­face.
For the com­fort of peo­ple using the pool, it is rec­om­mend­ed to main­tain a rel­a­tive humid­i­ty of 50–60%. Oth­er­wise (if the humid­i­ty is less), the water from the body evap­o­rates too quick­ly, which is not very com­fort­able. The air tem­per­a­ture is main­tained from 26 to 30 degrees (depend­ing on the pur­pose of the pool or the pref­er­ences of its own­ers).

Swim­ming pool and oth­er facil­i­ties
It is rec­om­mend­ed to sep­a­rate the pool area from oth­er areas of the build­ing using walls and doors. An attempt to com­bine halls of oth­er func­tions (bars, gyms, liv­ing rooms, etc.) with a swim­ming pool cre­ates many addi­tion­al prob­lems for design­ers and, as a result, rarely gives a long-term pos­i­tive result.

Air pres­sure
To ensure prop­er air move­ment, a slight neg­a­tive pres­sure must be cre­at­ed in the pool area. In this case, humid air from the pool does not enter oth­er rooms that do not have appro­pri­ate prepa­ra­tion.

Dropped ceil­ings
Sus­pend­ed ceil­ings for the pool — not the best solu­tion. Even the use of spe­cial mois­ture-resis­tant plates does not guar­an­tee the absence of prob­lems with the accu­mu­la­tion of mois­ture.

For obvi­ous rea­sons, win­dows are the area where mois­ture con­den­sa­tion most often occurs. To solve this prob­lem, it is nec­es­sary to pro­vide for blow­ing glass over the entire width of the win­dow with warm, dry air.

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