Table 10 Test of normality on challenges...

Table 10

Test of normality on challenges

Challenge	Kolmogorov–Smirnov			Shapiro–wilk
Challenge	Statis-tic	Df	Sig	Statis-tic	Df	Sig
Cultural resistance to change
The South African construction industry is reluctant to transform to emerging technologies	0.275	174	<0.001	0.774	174	<0.001
Lack of awareness in terms of the benefits of green retrofit project implementation by client	0.307	174	<0.001	0.727	174	<0.001
Delays in decision-making to adopt green retrofitting in projects	0.299	174	<0.001	0.740	174	<0.001
Clients fear to implement green retrofit projects due to unproven operational benefits	0.291	174	<0.001	0.712	174	<0.001
Unpredictable performance of emerging technology	0.297	174	<0.001	0.737	174	<0.001
Cost-related barriers
Construction/development costs of incorporating green initiatives are very high compared to traditional building	0.318	174	<0.001	0.706	174	<0.001
Maintenance costs of green retrofitting are very high	0.319	174	<0.001	0.787	174	<0.001
Lack of incentives to promote the adoption of green retrofitting of existing buildings	0.327	174	<0.001	0.729	174	<0.001
Clients are not willing to invest in green retrofit projects due to unproven savings on operational lifecycle	0.322	174	<0.001	0.728	174	<0.001
Green material is a bit expensive compared to traditional building material	0.301	174	<0.001	0.730	174	<0.001
Availability of green material or products
Unavailability of certified green material from local markets negatively impact the transition to green retrofitting	0.302	174	<0.001	0.707	174	<0.001
Extra costs for transportation of imported materials	0.288	174	<0.001	0.712	174	<0.001
Delivery lead time is a bit lengthy, which prolongs the actual project duration	0.325	174	<0.001	0.740	174	<0.001
Technical expertise and knowledge
Lack of skills regarding green retrofitting initiatives from BEPs	0.301	174	<0.001	0.700	174	<0.001
Lack of training regarding green retrofitting initiatives among BEPs	0.289	174	<0.001	0.700	174	<0.001
Lack of local contractors with experience on green retrofit projects	0.279	174	<0.001	0.703	174	<0.001
Lack of experience and knowledge on green retrofit project implementation	0.273	174	<0.001	0.720	174	<0.001

Challenge	Kolmogorov–Smirnov			Shapiro–wilk
Challenge	Statis-tic	Df	Sig	Statis-tic	Df	Sig
Cultural resistance to change
The South African construction industry is reluctant to transform to emerging technologies	0.275	174	<0.001	0.774	174	<0.001
Lack of awareness in terms of the benefits of green retrofit project implementation by client	0.307	174	<0.001	0.727	174	<0.001
Delays in decision-making to adopt green retrofitting in projects	0.299	174	<0.001	0.740	174	<0.001
Clients fear to implement green retrofit projects due to unproven operational benefits	0.291	174	<0.001	0.712	174	<0.001
Unpredictable performance of emerging technology	0.297	174	<0.001	0.737	174	<0.001
Cost-related barriers
Construction/development costs of incorporating green initiatives are very high compared to traditional building	0.318	174	<0.001	0.706	174	<0.001
Maintenance costs of green retrofitting are very high	0.319	174	<0.001	0.787	174	<0.001
Lack of incentives to promote the adoption of green retrofitting of existing buildings	0.327	174	<0.001	0.729	174	<0.001
Clients are not willing to invest in green retrofit projects due to unproven savings on operational lifecycle	0.322	174	<0.001	0.728	174	<0.001
Green material is a bit expensive compared to traditional building material	0.301	174	<0.001	0.730	174	<0.001
Availability of green material or products
Unavailability of certified green material from local markets negatively impact the transition to green retrofitting	0.302	174	<0.001	0.707	174	<0.001
Extra costs for transportation of imported materials	0.288	174	<0.001	0.712	174	<0.001
Delivery lead time is a bit lengthy, which prolongs the actual project duration	0.325	174	<0.001	0.740	174	<0.001
Technical expertise and knowledge
Lack of skills regarding green retrofitting initiatives from BEPs	0.301	174	<0.001	0.700	174	<0.001
Lack of training regarding green retrofitting initiatives among BEPs	0.289	174	<0.001	0.700	174	<0.001
Lack of local contractors with experience on green retrofit projects	0.279	174	<0.001	0.703	174	<0.001
Lack of experience and knowledge on green retrofit project implementation	0.273	174	<0.001	0.720	174	<0.001

Source(s): Authors' own work

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