一般既有的房間門( 包括空心木門或實木門等)的門框三邊周邊縫隙DIY改善方式

絕大多數既有的房間木門無論是空心木門或是實木門都搭配木門框組成。其實質功能通常不具備較佳的氣密或是隔音功能。尤其是門片四周會有漏光(也就是氣密不佳與隔音不良)的情況產生。

而大多數聲音的傳輸路徑以縫隙為主，所以只要將這些位置用專業的隔音材料以正確DIY工法施作就可得到明顯隔音效果。

ㄇ型門框凹槽門止三邊位置，經常有人以一般絨毛條粘貼但是還是無法得到改善，其原因是絨毛條屬於以防塵功能為主上無法達到氣密甚至於隔音等級。如果運用非專業隔音材料時，不但無法得到改善有時還會造成關不上門的窘境。

因此可運用專業級PK55氣密/防煙條粘貼於ㄇ型門框凹槽門止位置。專業級PK55氣密/防煙條採用適合於攝氏零下40度~攝氏121度(約為華氏零下40 度 至華氏250度) 專業阻尼材質搭配特殊空氣泡造型，在使用時經過擠壓形成小空氣阻尼達到有效的氣密與隔音功能。由於此類阻尼是外露型經常受到擠壓並且面臨溫度與溼度變化，所以它必須以特殊耐候不易變形材料製成。一般膠條經常受到溫差或是溼度影響而硬化或脆裂，失去其原有彈性無法保持氣密或隔音的效果。

專業級PK55氣密/防煙條相關網址:http://goods.ruten.com.tw/item/show?21304216792298

門片下方與地板縫隙的隔音處理方式依據地板材質或縫隙大小以及預算有多種隔音五金可選擇。(一般房間門片下方與地板間縫隙的隔音五金產品自行改善方式另外詳述)

1.縫隙小於2.5公分以內，地板屬於耐磨材質的情況，可搭配211或210隔音五金。
2.縫隙小於0.8公分以內，地板屬於耐磨材質的情況，可搭配306隔音五金。
3.縫隙小於2.5公分以內，只要地板無論是木質或石材，可搭配4131自動升降隔音五金。
4.縫隙小於2.5公分以內，鋪設地毯時有專用4131自動升降隔音五金搭配。

以上材料均可DIY自行改善，同時隔音五金的阻尼均可於多年使用後，因磨損可自行抽換，屬於非常經濟實惠的專業組合。

美國原廠規格說明參考資料

  Excellent resistance to compression set, particularly at elevated temperatures and for extended periods of time. 

  Stays flexible between -40 degrees (F) and 250 degrees (F) with very high resistance to flex fatigue.
  Outstanding ozone resistance rating. 
  Smoke tested in accordance with UL1784-01; meets the requirements of NFPA 105 "Standard for the Installation of Smoke Door Assemblies and Other Opening Protectives". 
  Designed for tighter frames.
  Demonstrates extremely low closing force. 
  Seal begins compressing at 3/16"; compresses to seal up to a 1/16" gap.
  Available in dark brown (D) or white (W).
  PK55 is available in 17ft. coils.
  Category H - Gasketing - Smoke and draft control for positive pressure openings.
  Category H gaskets for use with listed steel frames and/or classified steel covered composite, hollow metal doors rated up to and including 3 hours; wood and plastic covered composite doors rated up to and including 1-1/2 hours; and wood core doors rated for 20 minutes without hose stream. When applied to the door and frame assembly in accordance with the manufacturers installation instruction, the assembly will comply with UBC 7-2 (1997) part II.
  Category J - Doors - gasketing that has been tested on a positive pressure fire door and frame but is not required for the door to obtain its fire door rating. Category J gasketing does not negatively affect the rating on a positive pressure door.
  Category J gaskets for use with listed steel frames and/or classified steel covered composite, hollow metal doors rated up to and including 3 hours; wood and plastic covered composite doors rated up to and including 1-1/2 hours; and wood core doors rated for 20 minutes.